Question

Suppose y varies directly with x, and y= 12 when x=-3. What is the value of y when x = 6?

O-24
02
0-2
O-4

Answer 1

02

Explanation:

when you have a statement such as

"Suppose y varies directly with x "

you can write it as y = kx, where k is some constant.

In most cases you will be given one relations that let's you find the value of k, sure enough: x=12 and x=6

so 12 = k(6)

k = 2

then your equation will be y = 2x