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<channel><title><![CDATA[MR. BIGSBY'S MATH WORLD - Algebra 1 Blog]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog]]></link><description><![CDATA[Algebra 1 Blog]]></description><pubDate>Fri, 22 May 2026 02:33:35 -0700</pubDate><generator>Weebly</generator><item><title><![CDATA[Systems of Inequalities]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/systems-of-inequalities]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/systems-of-inequalities#comments]]></comments><pubDate>Fri, 11 Dec 2020 15:06:18 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/systems-of-inequalities</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-480005553117587440{ 								background: url(//www.weebly.com/uploads/b/58955683-447861826654730094/cgq-sgtc-ewh__2020-12-11_at_06_53_gmt-8__119.jpg); 							}  							#video-iframe-480005553117587440{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1607646396); 							}  							#wsite-video-container-480005553117587440, #video-iframe-480005553117587440{ 								background-repeat: no-repeat; 								b [...] ]]></description><content:encoded><![CDATA[<div class="wsite-video"><div title="Video: cgq-sgtc-ewh__2020-12-11_at_06_53_gmt-8__119.mp4" class="wsite-video-wrapper wsite-video-height-282 wsite-video-align-left"> 					<div id="wsite-video-container-480005553117587440" class="wsite-video-container" style="margin: 10px 0 10px 0;"> 						<iframe allowtransparency="true" allowfullscreen="true" frameborder="0" scrolling="no" id="video-iframe-480005553117587440" 							src="about:blank"> 						</iframe> 						 						<style> 							#wsite-video-container-480005553117587440{ 								background: url(//www.weebly.com/uploads/b/58955683-447861826654730094/cgq-sgtc-ewh__2020-12-11_at_06_53_gmt-8__119.jpg); 							}  							#video-iframe-480005553117587440{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1607646396); 							}  							#wsite-video-container-480005553117587440, #video-iframe-480005553117587440{ 								background-repeat: no-repeat; 								background-position:center; 							}  							@media only screen and (-webkit-min-device-pixel-ratio: 2), 								only screen and (        min-device-pixel-ratio: 2), 								only screen and (                min-resolution: 192dpi), 								only screen and (                min-resolution: 2dppx) { 									#video-iframe-480005553117587440{ 										background: url(//cdn2.editmysite.com/images/util/videojs/@2x/play-icon.png?1607646396); 										background-repeat: no-repeat; 										background-position:center; 										background-size: 70px 70px; 									} 							} 						</style> 					</div> 				</div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">youtube channel</h2>  <div class="wsite-youtube" style="margin-bottom:10px;margin-top:10px;"><div class="wsite-youtube-wrapper wsite-youtube-size-auto wsite-youtube-align-center"> <div class="wsite-youtube-container">  <iframe src="//www.youtube.com/embed/9BwNdBp1sz4?wmode=opaque" frameborder="0" allowfullscreen></iframe> </div> </div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">khan academy practice</h2>  <div><div class="wsite-image wsite-image-border-none " style="padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center"> <a href='https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:inequalities-systems-graphs/x2f8bb11595b61c86:graphing-two-variable-inequalities/v/graphing-systems-of-inequalities-2' target='_blank'> <img src="https://www.mrbigsbysmathworld.com/uploads/5/8/9/5/58955683/khan-academy-logo-old-version-2015-2_orig.jpg" alt="Picture" style="width:auto;max-width:100%" /> </a> <div style="display:block;font-size:90%"></div> </div></div>]]></content:encoded></item><item><title><![CDATA[Graph Key Characteristics]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/graph-key-characteristics]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/graph-key-characteristics#comments]]></comments><pubDate>Fri, 18 Sep 2020 18:49:01 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/graph-key-characteristics</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-459040095776839415{ 								background: url(//www.weebly.com/uploads/b/58955683-447861826654730094/function_characteristics_558.jpg); 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							}  							#wsite-video-container-459040095776839415, #video-iframe-459040095776839415{ 								background-repeat: no-repeat; 								background-position:center; 							}  							@media only screen and (-webkit-min-device-pixel-ratio: 2), 								only screen and (        min-device-pixel-ratio: 2), 								only screen and (                min-resolution: 192dpi), 								only screen and (                min-resolution: 2dppx) { 									#video-iframe-459040095776839415{ 										background: url(//cdn2.editmysite.com/images/util/videojs/@2x/play-icon.png?1600294407); 										background-repeat: no-repeat; 										background-position:center; 										background-size: 70px 70px; 									} 							} 						</style> 					</div> 				</div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title"><a href="https://58955683-447861826654730094.preview.editmysite.com/editor/main.php#">GRAPH KEY CHARACTERISTICS</a>&nbsp;on youtube</h2>  <div class="wsite-youtube" style="margin-bottom:10px;margin-top:10px;"><div class="wsite-youtube-wrapper wsite-youtube-size-auto wsite-youtube-align-center"> <div class="wsite-youtube-container">  <iframe src="//www.youtube.com/embed/inRjOIh4atY?wmode=opaque" frameborder="0" allowfullscreen></iframe> </div> </div></div>]]></content:encoded></item><item><title><![CDATA[Piecewise Functions]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/piecewise-functions]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/piecewise-functions#comments]]></comments><pubDate>Tue, 19 May 2020 18:18:56 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/piecewise-functions</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-293391728990730664{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/piecewise_functions_368.jpg); 							}  							#video-iframe-293391728990730664{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1589909355); 							}  							#wsite-video-container-293391728990730664, #video-iframe-293391728990730664{ 								background-repeat: no-repeat; 								background-posit [...] ]]></description><content:encoded><![CDATA[<div class="wsite-video"><div title="Video: piecewise_functions_368.mp4" class="wsite-video-wrapper wsite-video-height-282 wsite-video-align-left"> 					<div id="wsite-video-container-293391728990730664" class="wsite-video-container" style="margin: 10px 0 10px 0;"> 						<iframe allowtransparency="true" allowfullscreen="true" frameborder="0" scrolling="no" id="video-iframe-293391728990730664" 							src="about:blank"> 						</iframe> 						 						<style> 							#wsite-video-container-293391728990730664{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/piecewise_functions_368.jpg); 							}  							#video-iframe-293391728990730664{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1589909355); 							}  							#wsite-video-container-293391728990730664, #video-iframe-293391728990730664{ 								background-repeat: no-repeat; 								background-position:center; 							}  							@media only screen and (-webkit-min-device-pixel-ratio: 2), 								only screen and (        min-device-pixel-ratio: 2), 								only screen and (                min-resolution: 192dpi), 								only screen and (                min-resolution: 2dppx) { 									#video-iframe-293391728990730664{ 										background: url(//cdn2.editmysite.com/images/util/videojs/@2x/play-icon.png?1589909355); 										background-repeat: no-repeat; 										background-position:center; 										background-size: 70px 70px; 									} 							} 						</style> 					</div> 				</div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title"><a href="https://youtu.be/CF9Ak-d_eJc" target="_blank">Piecewise functions on youtube channel</a></h2>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">Khan Academy Help</h2>  <div><div class="wsite-image wsite-image-border-none " style="padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center"> <a href='https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:absolute-value-piecewise-functions/x2f8bb11595b61c86:piecewise-functions/v/piecewise-function-example' target='_blank'> <img src="https://www.mrbigsbysmathworld.com/uploads/5/8/9/5/58955683/published/khan.jpg?1589912492" alt="Picture" style="width:481;max-width:100%" /> </a> <div style="display:block;font-size:90%"></div> </div></div>]]></content:encoded></item><item><title><![CDATA[Inverse Functions]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/may-13th-2020]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/may-13th-2020#comments]]></comments><pubDate>Wed, 13 May 2020 20:15:07 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/may-13th-2020</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-398373360717717733{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/inverse_functions_308.jpg); 							}  							#video-iframe-398373360717717733{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1589909355); 							}  							#wsite-video-container-398373360717717733, #video-iframe-398373360717717733{ 								background-repeat: no-repeat; 								background-positio [...] ]]></description><content:encoded><![CDATA[<div class="wsite-video"><div title="Video: inverse_functions_308.mp4" class="wsite-video-wrapper wsite-video-height-282 wsite-video-align-left"> 					<div id="wsite-video-container-398373360717717733" class="wsite-video-container" style="margin: 10px 0 10px 0;"> 						<iframe allowtransparency="true" allowfullscreen="true" frameborder="0" scrolling="no" id="video-iframe-398373360717717733" 							src="about:blank"> 						</iframe> 						 						<style> 							#wsite-video-container-398373360717717733{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/inverse_functions_308.jpg); 							}  							#video-iframe-398373360717717733{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1589909355); 							}  							#wsite-video-container-398373360717717733, #video-iframe-398373360717717733{ 								background-repeat: no-repeat; 								background-position:center; 							}  							@media only screen and (-webkit-min-device-pixel-ratio: 2), 								only screen and (        min-device-pixel-ratio: 2), 								only screen and (                min-resolution: 192dpi), 								only screen and (                min-resolution: 2dppx) { 									#video-iframe-398373360717717733{ 										background: url(//cdn2.editmysite.com/images/util/videojs/@2x/play-icon.png?1589909355); 										background-repeat: no-repeat; 										background-position:center; 										background-size: 70px 70px; 									} 							} 						</style> 					</div> 				</div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title"><a href="https://youtu.be/D2j3Q-x3WMA" target="_blank">Inverse Functions on Youtube&nbsp;Channel</a></h2>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">Khan Academy Help</h2>  <div><div class="wsite-image wsite-image-border-none " style="padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center"> <a href='https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:inverse-functions-intro/v/introduction-to-function-inverses' target='_blank'> <img src="https://www.mrbigsbysmathworld.com/uploads/5/8/9/5/58955683/khan_orig.jpg" alt="Picture" style="width:auto;max-width:100%" /> </a> <div style="display:block;font-size:90%"></div> </div></div>]]></content:encoded></item><item><title><![CDATA[Quadratic Formula]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/quadratic-formula]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/quadratic-formula#comments]]></comments><pubDate>Tue, 14 Apr 2020 20:33:39 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/quadratic-formula</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-648920192242387802{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/quadratic_formula_204.jpg); 							}  							#video-iframe-648920192242387802{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1586886275); 							}  							#wsite-video-container-648920192242387802, #video-iframe-648920192242387802{ 								background-repeat: no-repeat; 								background-positio [...] ]]></description><content:encoded><![CDATA[<div class="wsite-video"><div title="Video: quadratic_formula_204.mp4" class="wsite-video-wrapper wsite-video-height-282 wsite-video-align-left"> 					<div id="wsite-video-container-648920192242387802" class="wsite-video-container" style="margin: 10px 0 10px 0;"> 						<iframe allowtransparency="true" allowfullscreen="true" frameborder="0" scrolling="no" id="video-iframe-648920192242387802" 							src="about:blank"> 						</iframe> 						 						<style> 							#wsite-video-container-648920192242387802{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/quadratic_formula_204.jpg); 							}  							#video-iframe-648920192242387802{ 								background: url(//cdn2.editmysite.com/images/util/videojs/play-icon.png?1586886275); 							}  							#wsite-video-container-648920192242387802, #video-iframe-648920192242387802{ 								background-repeat: no-repeat; 								background-position:center; 							}  							@media only screen and (-webkit-min-device-pixel-ratio: 2), 								only screen and (        min-device-pixel-ratio: 2), 								only screen and (                min-resolution: 192dpi), 								only screen and (                min-resolution: 2dppx) { 									#video-iframe-648920192242387802{ 										background: url(//cdn2.editmysite.com/images/util/videojs/@2x/play-icon.png?1586886275); 										background-repeat: no-repeat; 										background-position:center; 										background-size: 70px 70px; 									} 							} 						</style> 					</div> 				</div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title"><a href="https://youtu.be/qNIKlXIo_UM" target="_blank">Quadratic Formula on youtube channel</a></h2>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">PRactice with khan academy</h2>  <div><div class="wsite-image wsite-image-border-none " style="padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center"> <a href='https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:quadratic-formula-a1/v/using-the-quadratic-formula' target='_blank'> <img src="https://www.mrbigsbysmathworld.com/uploads/5/8/9/5/58955683/published/khan.jpg?1586896558" alt="Picture" style="width:auto;max-width:100%" /> </a> <div style="display:block;font-size:90%"></div> </div></div>]]></content:encoded></item><item><title><![CDATA[Quadratic Systems]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/quadratic-systems]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/quadratic-systems#comments]]></comments><pubDate>Sat, 28 Mar 2020 22:40:19 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/quadratic-systems</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-454116538213690794{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/quadratic_systems_714.jpg); 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							}  							#wsite-video-container-454116538213690794, #video-iframe-454116538213690794{ 								background-repeat: no-repeat; 								background-position:center; 							}  							@media only screen and (-webkit-min-device-pixel-ratio: 2), 								only screen and (        min-device-pixel-ratio: 2), 								only screen and (                min-resolution: 192dpi), 								only screen and (                min-resolution: 2dppx) { 									#video-iframe-454116538213690794{ 										background: url(//cdn2.editmysite.com/images/util/videojs/@2x/play-icon.png?1585246064); 										background-repeat: no-repeat; 										background-position:center; 										background-size: 70px 70px; 									} 							} 						</style> 					</div> 				</div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title"><a href="https://youtu.be/DTZmW3Fzk3w" target="_blank">Quadratic Systems on Youtube Channel</a></h2>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">Khan Academy</h2>  <div><div class="wsite-image wsite-image-border-none " style="padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center"> <a href='https://www.khanacademy.org/test-prep/sat/sat-math-practice/new-sat-passport-advanced-mathematics/v/sat-math-p8-easier' target='_blank'> <img src="https://www.mrbigsbysmathworld.com/uploads/5/8/9/5/58955683/khan_orig.jpg" alt="Picture" style="width:auto;max-width:100%" /> </a> <div style="display:block;font-size:90%"></div> </div></div>  <div class="wsite-spacer" style="height:50px;"></div>  <h2 class="wsite-content-title">aacps e-learning</h2>  <div><div class="wsite-image wsite-image-border-none " style="padding-top:10px;padding-bottom:10px;margin-left:0px;margin-right:0px;text-align:center"> <a href='https://sites.google.com/aacps.org/algebra1/home' target='_blank'> <img src="https://www.mrbigsbysmathworld.com/uploads/5/8/9/5/58955683/aacps_orig.jpg" alt="Picture" style="width:auto;max-width:100%" /> </a> <div style="display:block;font-size:90%"></div> </div></div>]]></content:encoded></item><item><title><![CDATA[Completing the Square - Vertex Form]]></title><link><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/completing-the-square-vertex-form]]></link><comments><![CDATA[https://www.mrbigsbysmathworld.com/algebra-1-blog/completing-the-square-vertex-form#comments]]></comments><pubDate>Wed, 18 Mar 2020 00:43:16 GMT</pubDate><category><![CDATA[Uncategorized]]></category><guid isPermaLink="false">https://www.mrbigsbysmathworld.com/algebra-1-blog/completing-the-square-vertex-form</guid><description><![CDATA[ 					 						 						 						 						 							#wsite-video-container-979518182269954216{ 								background: url(//education.weebly.com/uploads/b/58955683-447861826654730094/complete_the_square_vertex_form_840.jpg); 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