Question

The number of calories burned by a 90-pound cyclist is proportional to the number of hours the cyclist rides. The equation to represent this relationship is y = 225x. What is the constant of proportionality?

A:135

B:225

C:315

D:90

Answer 1

Answer:

The constant of proportionality is 225

Step-by-step explanation:

Given

$y = 225x$

Required

Determine the constant of proportionality (k)

A direct proportion is represented as:

$y = kx$

Where k is the constant of proportionality

By comparing:

$y = kx$ to $y = 225x$

Hence:

$k = 225$