Question

The variables x

and y
vary directly. Use the values to find the constant of proportionality, k
. Then write an equation that relates x
and y
.

y=72; x=3

Answer 1

Answer: k = 24, y = 24x

Explanation:

y = kx (the variables x and y varies directly)
when x = 3, y = 72
k = y/x = 72/3 = 24
y = 24x