Question

For what value of k will the points (3,5) and (9,k) represent a proportional relationship?

Answer 1

Answer:

k = 15

Step-by-step explanation:

For a proportional relationship to exist then for both points

k = $\frac{y}{x}$ ← k is the constant of proportion, that is

$\frac{5}{3}$ = $\frac{k}{9}$ ( cross- multiply )

3k = 45 ( divide both sides by 3 )

k = 15