Question

in which of the following x and y vary directly with each other.
tomorrow is my test​

Answer 1

Answer:

they actually carried 1 by -5 ok? or I am incorrect?

Answer 2

Answer:

To find the direct variation here is the step by step process to find the constant variation.

From the direct verification y=-8x,

Where x and y are the variable so c= -8 (where it is constant)  

To represents a direct variation between variables y=-8x, x and y, c=-8  

Moreover

If x=2,c=-8 then y =2*8=-16

if x=3,c=-8 then y= 3*8=-24

if x=4,c=-8 then y= 4*8=-32  

From the given values if x increase, y also increases and here -8 is the constant , only x and y keep varying the variables.