Question

Question
Given the function below, if f(x) = -1, find the value of x.

f (x) = 4x + 11

Answer 1

soln

given,

f(x) = 1

Now,

f(x) = 4x+11

or, -1 =4x +11

or,4x = 11+1

or, 4x = 12

or, x. =12/4

or x. = 3

Therefore, The value of x is 3.