Question

For the data in the table does y vary directly with x. If it does write an equation for the direct variation.

x y
32 24
16 8
8 6

A yes y=0.5x
B yes y=2x
C yes y=075x
D no y does not vary directly with x

Answer 1

y varies directly with x means
y=kx or
y/x=k
see if that's true for all of them, if they all have same k value, it is direct variation

24/32=3/4
8/16=1/2
6/8=3/4

no

D is answer