Question

I have an algebra II question that just isn't making sense to me.. I am really unsure about what the question is asking me to do.. so if you could help me work through it , It would be greatly appreciated !! :

13. Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

x | y
4 | 6.4
7 | 11.2
10| 16
13| 20.8

Answer 1

Plot the points and graph.

Answer 2

Okay i graphed them @AmTran_Bus , now what ??

Answer 3

Let me do it real quick.

Answer 4

Okay

Answer 5

So I got a straight line, perfectly diagonal.

Answer 6

11.2-6.4=4.8
16-11.2=4.8
20.8-16=4.8

Answer 7

I would say yes