Question

Please help will fan and medal!!! Determine whether y varies directly with x. If so, find the constant of variation k.
x y
4 6.4
7 11.2
10 16
13 20.8

Answer 1

\[\huge\rm y=kx\] equation for direct variation
and k is constant of variation
so pick any (x,y) and plug them into the equation

Answer 2

make sense ?

Answer 3

yeah that helped! im just trying to figure out the last part. find the constant variation of k and write an equation.. @Nnesha

Answer 4

yes so k is what ? did you solve that ?

Answer 5

its 1.6 right??

Answer 6

yes that's right now replace k with 1.6 in this equation y=kx
that's it

Answer 7

y= 1.6x like that?

Answer 8

@Nnesha

Answer 9

yes right :=)

Answer 10

Thank you!! @Nnesha

Answer 11

yw :=)