Which equation represents a proportional relationship?
1. y = 7x – 3
2. y = 150x
3. y = 21/x
4. y = 2x + 1

Respuesta :

The answer is number 1. y = 7x - 3

Equation 2. [tex]y = 150x[/tex] represents a proportional relationship.

Here  [tex]y=150x[/tex]

On rearranging we get, [tex]\frac{y}{x} =150[/tex]

Or, [tex]\frac{x}{y} =\frac{1}{150}[/tex]

Or, [tex]x:y=1:150[/tex]

from above expression we can say now equation 2 represents a proportional relationship and the other equations cannot show the proportional relationship.

Hence Equation 2. [tex]y = 150x[/tex] represents a proportional relationship.

For more details on ratio or proportion follow the link:

https://brainly.com/question/165414