### Home > ACC6 > Chapter 4 Unit 11 > Lesson CC2: 4.2.4 > Problem4-65

4-65.

State whether or not each equation below represents a proportional relationship. How can you tell?

Equations that represent proportional relationships contain only multiplication.

1. $y=x+2.3$

Not proportional, since there is a $y\text{-intercept}$ other than $0$.

1. $y=\frac{6}{13}x$

Is there anything other than multiplication in this equation?

1. $7-y=2x$

This equation can be rewritten as $y=-2x+7$

Not proportional. Why?