Question

A function is shown. ƒ (x) = 2x − 9
-
What is the value of ƒ (−4) ?

Answer 1

Answer: To find the value of ƒ (−4), we substitute −4 for x in the function ƒ(x) = 2x − 9:

ƒ(−4) = 2(−4) − 9

Performing the multiplication and addition, we get:

ƒ(−4) = −8 − 9

Thus, the value of ƒ(−4) is equal to −17.

Answer 2

Answer: ƒ (−4) = -17

Explanation:

To find the value of ƒ (−4) we will substitute all values of x for -4 in the original function and simplify.

ƒ (−4) = 2x - 9

ƒ (−4) = 2(-4) - 9

ƒ (−4) = -17