Algebra 1

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

Chapter 9 - Quadratic Functions and Equations - Chapter Test - Page 593: 1


Please see the graph.

Work Step by Step

Three points on the curve: $y=3x^2-7$ Line of symmetry: $x=-b/2a$ $x=-1*0/2*3$ $x=0/6 = 0$ $y=3x^2-7$ $y=3*(0^2)-7$ $y=3*0-7$ $y=-7$ $(0,-7)$ Let $x=3$: $y=3x^2-7$ $y=3*3^2-7$ $y=3*9-7$ $y=27-7$ $y=20$ $(3,20)$ Since $(3,20)$ is three units from the axis of symmetry, we also know that $(-3,20)$ is also three units from the axis of symmetry and on the line.
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