You can put this solution on YOUR website! What is the x and y intercepts for: f(x)=-x^2 + 2x + 8
Find the y intercept (x=0)
y = -0^2 + 2(0) + 8
y = 0 + 8
y = 8
:
Find the x intercept (y=0)
-x^2 + 2x + 8 = 0
x^2 - 2x - 8 = 0; multiplied by -1, (easier to factor)
factors to
(x-4)(x+2) = 0
Two intercepts
x = 4
and
x = -2
