Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - 9-8 Systems of Linear and Quadratic Equations - Practice and Problem-Solving Exercises - Page 586: 31



Work Step by Step

$y=3x^2-4x+2$ $x=0$ $y=3x^2-4x+2$ $y=3*0^2-4*0+2$ $y=3*-0-0+2$ $y=0+2=2$ $(0,2)$ $x=2$ $y=3x^2-4x+2$ $y=3*2^2-4*2+2$ $y=3*4-8+2$ $y=12-8+2$ $y=6$ $(2,6)$ $m=(6-2)/(2-0)$ $m=4/2 = 2$ $y=mx+b$ $6=2*2+b$ $6=4+b$ $6-4=4+b-4$ $2=b$ $y=2x+2$
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