Question

Find the constant of proportionality (r) in the equation y=rx

Answer 1

1/4

Explanation:

Multiplying the input (x) by (1/4) results in the output. This is direct proportion, and the constant of proportionality is (1/4).

Answer 2

r =
`(1)/(4)`

Explanation:

Given the proportional equation

y = rx ← r is the constant of proportion

Divide both sides by x

`(y)/(x)` = r

Use any ordered pair from the table.

Using (8, 2 ) , then

r =
`(2)/(8)` =
`(1)/(4)`