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.

Question

asked Sep 19, 2019 164k views

2 Answers

Edual Feliz · Answer 1 · 2019-09-25T02:09:07+0000

Answer:

r = 2.5

Explanation:

given the equation y = rx ← r is the constant of proportionality

then r =
(y)/(x)

from the given values of x and y

r =
(25)/(10) =
(12.5)/(5) =
(10)/(4) = 2.5