Question

For f(x) = −3x − 13, find f(x) when x = –1.

Answer 1

• f(-1) = -10

Explanation:

Given

• f(x) = −3x − 13,

To find f(x) when x = –1 substitute x with its value in the equation:

• f(-1) = (-3)(-1) - 13 = 3 - 13 = -10
• f(-1) = -10