SOLUTION: Find the x-intercepts of the parabola with vertex (-1,-108)and y- intercepts (0,-105).

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Question 389266: Find the x-intercepts of the parabola with vertex (-1,-108)and y- intercepts (0,-105).
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
y=a%28x%2Bh%29%5E2%2Bk
Using the vertex,
y=a%28x-1%29%5E2-108
Using the y-intercept,
-105=a%280-1%29%5E2-108
a=3
So then,
y=3%28x-1%29%5E2-108
Find x when y=0
3%28x-1%29%5E2-108=0
3%28x-1%29%5E2=108
%28x-1%29%5E2=36
%28x-1%29=0+%2B-+6
x=1+%2B-+6
highlight%28x=-5%29 and highlight%28x=7%29