Question

The mapping diagram shows a functional relationship.

Domain
Range
топ
3
9
0
3
--1
9
Complete the statement.
f(3) is

Answer 1

f(3) = -1

Explanation:

The domain is the x-value in a point.

The range is the y-value in a point.

In other words, (x, y) = (domain, range).

Notice that when x is 3, y is -1.

So, f(x) = f(3).

We conclude that f(3) = -1.

Look at the chart. We agree that 3 is lined up with -1.

This is another way to reason it out.

Try this one:

What is f(9)?