SOLUTION: find the x intercept of a parabola with a vertex of -1,-108 and a y intercept of 0,-105 ( answer should be written in (x1,y1) (x2,y2)

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: find the x intercept of a parabola with a vertex of -1,-108 and a y intercept of 0,-105 ( answer should be written in (x1,y1) (x2,y2)      Log On


   

Question 889758: find the x intercept of a parabola with a vertex of -1,-108 and a y intercept of 0,-105 ( answer should be written in (x1,y1) (x2,y2)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Write in vertex form.
y=a%28x%2B1%29%5E2-108
When x=0
y=a%280%2B1%29%5E2-108=-105
a-108=-105
a=3
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y=3%28x%2B1%29%5E2-108
3%28x%2B1%29%5E2=108
%28x%2B1%29%5E2=36
x%2B1=0+%2B-+6
x=-1+%2B-+6
x=-7 and x=5
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(-7,0),(5,0)