In order to find the slope, we must take 2 point in the graph, the "easy ones".
they could be
[tex]\begin{gathered} (x_1,y_1)=(0,0) \\ \text{and} \\ (x_2,y_2)=(1,50) \\ \end{gathered}[/tex]
where x's are hours and y's distances. The slope can be computed as
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
by substituying the values of the 2 points into m, we have
[tex]\begin{gathered} m=\frac{50-0}{1-0} \\ m=\frac{50}{1} \\ \end{gathered}[/tex]
this means that, Tim travels 50 miles every hours. Which is answer C.
