What is the value of k in the function f(x) = 112 - kx if f(-3) = 121?

Solution:

Given the function f(x) = 112 - kx

f(-3) = 121

We have to find the value of k

⇒ f(-3) = 112 - k(-3)

⇒ 112 + 3k = 121

⇒ 3k = 121 - 112

⇒ 3k = 9

⇒ k = 9/3

⇒ k = 3

What is the value of k in the function f(x) = 112 - kx if f(-3) = 121?

Summary:

The value of k in the function f(x) = 112 - kx if f(-3) = 121 is 3.