Question

How do i find the answer of this math question or problem f(x) = 4x − 9?

Answer 1

x = 9/4

Explanation:

f(x) = 4x - 9

(first substitute f(x) with 0)

0 = 4× - 9

(Move four)

-4x = -9

=> x = -9/-4

= 9/4