On the first graph, when x moves 1 unit, that is, from x = 2 to x = 3, the change in y is
[tex]\begin{gathered} \Delta y=y_2-y_1 \\ =87-58 \\ =29 \end{gathered}[/tex]
Unit rate of the first graph is $29 per hour.
On the second graph, when x moves 1 unit, that is, from x = 0 to x = 1, the change in y is
[tex]\begin{gathered} \Delta y=y_2-y_1 \\ =22-0 \\ =22 \end{gathered}[/tex]
Unit rate of the second graph is $22 per hour.
