& \mathbf{Describe:} && \text{The graph shows time in number of hours along the horizontal axis.}\\&&& \text{Distance in number of miles is shown along the vertical axis. The two}\\&&& \text{lines on the graph represent the speeds of Roberts and Clark. The Fact}\\&&& \text{indicates that Roberts drove 10 mph slower than Clark.}\\\\& \mathbf{My \ Job:} && \text{Use the Fact to figure out which line represents Clark. Complete the table}\\&&& \text{for Clark. Write a rule to describe how the number of miles traveled is}\\&&& \text{related to the number of hours of driving time.}\\\\& \mathbf{Plan:} && \text{Compare the lines with the Fact and decide which line represents Clark. }\\&&& \text{Determine his average speed. Use that data to complete the table.}\\&&& \text{Generalize from the data in the table. Construct the rule.}\\\\& \mathbf{Solve:} && \text{Clark is line S.}\\&&& 1. \ \text{He was driving at a speed of} \ 20 \ \text{mph.}\\&&& 2. \ \text{Complete the table using that speed to figure out the distances.}
{}