Does the values of y have to be the same in axis of symmetry and vertex in functions when they are positive and negative. So like, for instance, if x = -1, that results in y = 2; so if x will equal 1, will y equal 2 as well?   For e.x. -  Graph the function y= -4x^2+4x+8. Find the vertex and the axis of symmetery.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Does the values of y have to be the same in axis of symmetry and vertex in functions when they are positive and negative. So like, for instance, if x = -1, that results in y = 2; so if x will equal 1, will y equal 2 as well?

 

For e.x. - 

Graph the function y= -4x^2+4x+8. Find the vertex and the axis of symmetery.

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