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

An x-intercept occurs where f(x) = 0. From f(x) = (x − 8)(x + 9), the function is zero when x = 8 or x = −9, giving intercepts (8, 0) and (−9, 0). Choice D, (−9, 0), is an x-intercept.

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