Question

If y varies directly with x and Y equals 12 when X equals four what is the constant of proportionality

Answer 1

Answer:

3

Step-by-step explanation:

If  y varies directly with x, we have:

$y \propto x\\ Introducing the constant of proportionality, k\\y=kx$

When y=12, x=4

Substituting these values into the equation

12=4k

k=12/4

k=3

The constant of proportionality is 3.