#1**+1 **

Note that we can use the first one to find a variation constant

y = k (x )

6.4 = k (4) divide both sides by 4

6.4 / 4 = k

1.6 = k

So......if this is true......then we should have that

y = 1.6x

Now....look at the second set of values (x,y) = (7, 11.2)

So......is this true??

11.2 = 1.6 ( 7) yes!!!!

I think if you will check each of the other x values multiplied by the variation constant, you will end up with their associated y value......it might be good to practice this.......!!!!

CPhill
Sep 26, 2017