Question

assume that t varies directly as p. What is the constant of proportionality if r=3 when p=15

Answer 1

$\begin{gathered} \text{ r }\propto\text{ p} \\ r\text{ = kp} \\ k=\frac{r}{p} \\ \text{when r = 3 when p = 15} \\ k\text{ = }\frac{3}{15} \\ k\text{ = }\frac{1}{5} \end{gathered}$