For the quadratic function f (x) = −2(x+1)2 +2, find the vertex, x−intercepts (if possible), y−intercept, then sketch the graph

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter9: Quadratic Equations And Functions
Section9.7: Graph Quadratic Functions Using Transformations
Problem 361E: Graph the quadratic function f(x)=x2+4x+5 first using the properties as we did in the last section...
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For the quadratic function f (x) = −2(x+1)2 +2, find the vertex, x−intercepts (if possible), y−intercept,
then sketch the graph

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I have never seen this way before, and it is not easy to follow. How did you go from 0 to 1 on the right side? I am use to making these kinds of things  into a quadratic formula

 

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