Question

Is this equation for Proportional or not proportional ? How do you know? y= 7x -3

Answer 1

Explanation:

No it's not

• There are two ways you can tell.
• the y intercept must be zero. In this case, it is -3 so you do not have a proportional relationship.

the fraction y/x must give the same rational result. This one won't.

Examples

x = 4

y = 25

y/x = 6.25

x = 2

y = 7*2 - 3 = 11

y/x = 11/2 = 5.5

Not the same