Respuesta :

First find the rate of change

[tex]\begin{gathered} \text{Rate of change = }\frac{45\text{ - 36}}{5\text{ - }4} \\ =\text{ }\frac{9}{1} \\ =9 \end{gathered}[/tex]

y = mx + c

m = 9 and c = 0

y = 9x