Question

What does f(5)=7 mean?

Answer 1

Explanation:

Normally we write equation of functions like this: f(x) = x - 5

When we say f(5) = 7, we are implying that the x is 5.

The equation could look something like this: f(x) = x + 2

In this case, if you put x as 5, you will get 7 or 5 + 2

Answer 2

Means that 5 times of f equals to 7

• Therefore f(5)-7=0
• Also f= 1.4