Suppose y varies directly with x, and y = 8 when x = –6. What direct variation equation relates x and y? What is the value of y when x = –2?

Question

diyadiya · Answer

y varies directly with x means $\Large y=kx $

diyadiya · Answer

where $\Large k$ is known as the constant of variation

diyadiya · Answer

now you've got the equation 
Substitute the value of x & y 
y=8 & x=-6 
NOw you have to find k

diyadiya · Answer

@Erin08 Did you understand / Can you do it ?

anonymous · Answer

yes thank you very much!

diyadiya · Answer

After finding k 

again substitute the value of x (x=-2) in the same equation (y=kx) {now you have value of k & x} and find y 

You're Welcome :)