Question

If (x) = 7 -x , find f(3)

Answer 1

Hey there!!

Given :

f( x ) = 7 - x

What is f(x)?

f(x) is basically the y.

The question states :

y = 7 - x

Now, find ( 3 )

This states that, I have given the value for x and find y.

y = 7 - x

y = 7 - 3

y = 4

Hence, f(3) = 4

Hope helps!

Answer 2

f(3) means you replace x with 3.

f(x) = 7-x

f(3) = 7-3

f(3) = 4