The function of the cost of Pears is:
Now, with the graph, we can find the function of the Cost of apples, let's find the slope.
In the graph we can identify the next two points: (0,0) and (3,4).
The formula for the slope is:
Then, the function of the cost of apples is:
Where a is the pounds of apples.
Then the cost of 1 pound of pears and the cost of 1 pound of apples is:
Then, apples cost approximately $1.4-$1.33=$0.07 less per pound than pears do.