Question

X and y vary directly. When x is 5, y is -30. What is y when x is -3?

Answer 1

y=18

Explanation:

Example:- Buy gas for 10$ and you get 30gallons
Buy gas for 2$ and you get ? gallons
`2/10xx30` = 6 gallons
Do the same with x and y
When x=5 y= - 30
When x=-3 then y =?
`-3/5*-30/1`
y=18