Question

Given f (x) = 3x - 8 find x if f(x) = -14​

Answer 1

The value of x is -2 .

Explanation:

You have to solve it by doing comparison :

`f(x) = 3x - 8`

`f(x) = - 14`

`3x - 8 = - 14`

`3x = - 14 + 8`

`3x = - 6`

`x = - 6 / 3`

`x = - 2`

Answer 2

`x=-2`

Explanation:

So we have the function:

`f(x)=3x-8`

And we want to solve for x if f(x) is -14.

So, substitute -14 for f(x):

`-14=3x-8`

Add 8 to both sides:

`-6=3x`

Divide both sides by 3:

`x=-2`

And we're done!