Answer:
(–9,0)
Step-by-step explanation:
f(x) = (x – 8)(x + 9)
= x² + 9x -8x - 72
= x² + x - 72
x-intercept is a coordinate of x axis where a function cuts the x-axis. They are points where y=0 or f(x) = 0.
x² + x - 72 = (x – 8)(x + 9) = 0
∴ x – 8 = 0
x = 8
x + 9 = 0
x = -9
The required points are (8, 0) and (-9, 0).
From the choices given there is only one correct answer. (–9,0)
