Question

Please help!

The quantities x and y are proportional.
x: 4 5 10
y: 10 12.5 25
Find the constant of proportionality (r) in the equation y=rx.

Answer 1

9514 1404 393

Answer:

r = 2.5

Explanation:

The constant of proportionality can be found by solving the equation for r:

r = y/x

Then any corresponding values of x and y can be used to find r:

r = 25/10 = 2.5

The constant of proportionality is 2.5.