Example 2

A home-improvement store sells carpet for $25 per square yard, plus a $50 delivery charge. Create a graph for this function, then determine the average rate of change between purchasing 10 yds2 and 30 yds2.
1. Create an equation of a function to represent this scenario. 2. Graph the function. 3. Identify the type of function described. This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.