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Algebraic and Graphical Connections of Quadratics, x-intercept is easy to see on a graph but must be computed if all you have is the equation ???? ↑, vertex will be a (x,y) coordinate to find y plug the x in to original equation. Answer is y., x-intercept is easy to see on a graph but must be computed if all you have is the equation ???? ↑, rate (steepness) is a ↓, y-intercept is c ↓, x-intercept is easy to see on a graph but must be computed if all you have is the equation ???? ↑, to find y plug the x in to original equation. Answer is y. need both if no a then a is assumed to be 1 a ↓, <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> descriminant: </mtext> <mmultiscripts> <mtext> b </mtext> <none/> <mtext> 2 </mtext> </mmultiscripts> <mtext> - 4ac </mtext> </mrow> </math> is = 0 then the vertex and x-intercept are the same (see step 1), <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> x = - </mtext> <mfrac> <mtext> b </mtext> <mtext> 2a </mtext> </mfrac> </mrow> </math> need both if no a then a is assumed to be 1 a ↓, to find y plug the x in to original equation. Answer is y. need both if no a then a is assumed to be 1 b ↓