Question

Which point is an x-intercept of the quadratic function f(x) = (x + 6)(x – 3)? (0,6) (0,–6) (6,0) (–6,0)

Answer 1

D. (-6, 0)

Explanation:

Answer 2

Answer: (-6, 0)

f(x) = (x+6)(x-3)

the x-intercept is where the graph intercepts the x-axis, meaning y=0.

So, 0 = (x+6) (x-3).
Now either, (x+6) or (x-3) must equal to zero.

x+6 = 0 ... x=-6
x -3 = 0 ... x= 3

So, the x-intercepts are (-6, 0) and (3, 0)