Question

Find the function f (x) = 3x - 4 find each of the following values.

1) Find f (10).

2) Find x when f (x) = 17​

Answer 1

1) 26

2) 7

Explanation:

1) f(10)= (3*10)-4 = 26

2) f(x) = 3x-4

=> 17= 3x-4

=> 17+4= 3x

=> 21= 3x

=> x= 21÷3

so, x= 7