Which equation when graph has x intercepts at (2,0) and (4,0) and a y-intercept of (0,-16)?
a. f(x)= -(x-2)(x-4)
b. f(x)= -(x+2)(x+4)
c. f(x)=-2(x-2)(x-4)
d. f(x)= -2(x+2)(x+4)

The correct answer is C. if you plug zero in for 'x' you will get the y-intercept.
-2(0-2)(0-4)= -2(-2)(-4)=-16
Next set each factor equal to zero to get the x-intercepts.
(x-2)=0 x = 2 (2,0)
(x-4) = 0 x = 4 (4,0)

I hope this helps

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