Question

The function f is defined by f(x)= 7+x/-6+3x
Find f(4a)

Answer 1

`$ (7 +4a)/(-6 + 12a) $`

Explanation:

Given: f(x) =
`$ (7 + x)/(-6 + 3x) $`

Now to determine f(4a) substitute 4a in the place of x.

⇒ f(4a) =
`$ (7 + 4a)/(-6 + 3(4a))`

⇒ f(4a) =
`$ (7 + 4a)/(-6 + 12a) $`