SOLUTION: find the x-intercept and y-intercept f(x)= -x^2+2x+63 I need the x coordinates of the intercepts and the y intercepts (0, )

SOLUTION: find the x-intercept and y-intercept f(x)= -x^2+2x+63 I need the x coordinates of the intercepts and the y intercepts (0, )

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Question 534393: find the x-intercept and y-intercept
f(x)= -x^2+2x+63
I need the x coordinates of the intercepts
and
the y intercepts (0, )
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
factor
.
-x^2 +2x +63 = 0
.
(-x -7)(x -9)
.
Check using FOIL.
.
-x^2 +9x -7x +63 = -x^2 +2x +63
.
Roots
.
x = -7 or 9
.

.
By inspection, you can see the y-intercept is (0,63).
You also can find it by setting x=0 and solving the equation.
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