Question

Which point is an x-intercept of the quadratic function
f(x) = (x – 8)(x + 9)?

(0,8)
(0,–8)
(9,0)
(–9,0)

Answer 1

x-intercepts occur when f(x)=0. Set (x − 8)(x + 9)=0 → x=8 or x=−9. The matching choice is (−9, 0).