Question

How do you find the constant of proportionality from the equation `y=7.5x`?

Answer 1

The constant of proportionality is 7.5

Explanation:

From: https://en.wikipedia.org/wiki/Proportionality_(mathematics)

Given two variables x and y, y is directly proportional to x (x and y vary directly, or x and y are in direct variation) if there is a non-zero constant k such that

y=kx

The relation is often denoted, using the ∝ or ~ symbol, as

`y prop x`

and the constant ratio

`k = y/x`

In this problem k = 7.5