The rate of change (ROC) is the speed at which a variable changes over a specific period of time.
First one
A = (4, 144)
B = (8, 288)
[tex]\begin{gathered} m=\frac{288-144}{8-4} \\ m=\frac{144}{4} \\ m=36 \end{gathered}[/tex]Second one
B = (8, 288)
C= (17, 612)
[tex]\begin{gathered} m=\frac{612-288}{17-8} \\ m=\frac{324}{9} \\ m=36 \end{gathered}[/tex]Both rate of changes are equal and the values is 36
