What two Rules have to be met in order for a graph to be Proportional?

straight line through the origin

Step-by-step explanation:

you could check in several ways,

like for example

A) an equation in the form y=kx where k is the comtant of proportionality

B)a graph with a straiht line that passes through the origin

C)a set or tavlr shows equivalent ratios

D)a verbal discription that discribes a direct porprotional realtionship

Step-by-step explanation:

Use the Pythagorean theorem:

Verify this for each line:

1.

2.

3.