### Home > CCA2 > Chapter Ch5 > Lesson 5.2.2 > Problem 5-79

5-79.

Consider the function defined by inputs that are the lengths of the radii of a circle, and outputs that are the areas of those circles. Write the equation for this function and investigate it completely.

Begin by making a table. Let be the radius. Let

*be area.*

Choose several values of . The area of a circle is

Your investigation should include at least:

An equation in terms of and

A graph

Domain and Range

A description of the growth

What else does your class list for Investigating a Function include?