Find the coordinates of the vertex, the y-intercept, and the x-intercepts (if any exist) of the following quadratic function. g(x) = -x - 4x + 12

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter8: Introduction To Functions
Section8.8: Linear And Quadratic Functions
Problem 10WE
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Find the coordinates of the vertex, the y-intercept, and the x-intercepts (if any exist) of the following quadratic function.
g(x) = -x - 4x + 12
Transcribed Image Text:Find the coordinates of the vertex, the y-intercept, and the x-intercepts (if any exist) of the following quadratic function. g(x) = -x - 4x + 12
Expert Solution
Step 1

0 =-x² – 4x +12
-x - 4x +12 = 0
x? +4x – 12 = 0
x= 2,-6
Step 2

Step 3

Substitute 0 for x to obtain the y-intercept as,

y=-(0) – 4(0)+12
y=0+0+12
y=12
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