Question

Select the correct answer.Noel works as a driver for a transportation company. On average, he drives 152 hours to make 19 successful deliveries. Assume this rate is hisconstant rate for delivering goods. If you graph this relationship with time along the x-axis and number of deliveries along the y-axis, the slope ofthe line you get gives Noel's unit rate for a successful delivery. Which unit rate can be interpreted as the slope?A. 8 deliveries per hourB. of an hour per deliveryoc. of a delivery per hourD. of an hour per delivery

Answer 1

If a graph is plotted with hours of delivery along the x-axis and the number of deliveries along the y-axis.

Then the slope m, of a linear graph is;

$m=\frac{\text{change along y-axi}s}{change\text{ along x-ax is}}$$\begin{gathered} \text{Per delivery =}\frac{19\text{ deliveries}}{152\text{ hours}}=8\text{ deliveries per hour} \\ \end{gathered}$

The unit rate as interpreted as the slope is 8 deliveries per hour