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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. Homework Help ✎

Begin by making a table. Let x be the radius. Let y be area.

Choose several values of r. The area of a circle is A = πr²

Your investigation should include at least:
An equation in terms of x and y
A graph
Domain and Range
A description of the growth

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

y = πx2