Question

For the function, f(x) =1/4 x - 2, find x if f(x) = -1.

Answer 1

• x = 4

Explanation:

Given function

• f(x) =1/4 x - 2

Find x if f(x) = -1

• 1/4x - 2 = - 1
• 1/4x = 2 - 1
• 1/4x = 1
• x = 1*4
• x = 4

Answer 2

x=4

Explanation:

f(x) =1/4 x - 2 when f(x) = -1.

-1=1/4x-2

-1+2=1/4 x

1×4=x

x=4