Question

The question is in the cat. it is simple, I just need a equation for the proportional graph.

Answer 1

Direct Variation

y=7.5x

Examining the data

We can see a direct variation since the growth is linear and can be described by.

y=15/2x or y=7.5x

This factor can be obtained by dividing the y over the x in the table.

Setting a Table

x| y

2 15 y=7.5(2) y= 15

4 30