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, )

Algebra ->  Graphs -> 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, )      Log On


   

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) About Me  (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
.
+graph%28500%2C500%2C-10%2C15%2C-20%2C70%2C-x%5E2%2B2%2Ax%2B63%29+
.
By inspection, you can see the y-intercept is (0,63).
You also can find it by setting x=0 and solving the equation.