Find x if f(x) = 2x + 7 and f(x) = -1.

Solution:

Given function is

f(x) = 2x + 7 and f(x) = -1

Equate the two values

2x + 7 = -1

2x = -1 - 7

2x = -8

x = -4

The value of x is -4

Find x if f(x) = 2x + 7 and f(x) = -1.

Summary:

If f(x) = 2x + 7 and f(x) = -1, then the value of x is -4.