Question

If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8?

Answer 1

y varies directly as x
translates as
y=kx
where k is a constant number

Answer 2

you can find the constant k by using the second thingy in your setence
we are given (x=72,y=6) must be on y=kx

Answer 3

plug in to find the constant k

Answer 4

so i multiply?

Answer 5

you plug in the 72 where the x is
you plug in the 6 where the y is

Answer 6

so you solve the equation 6=k*72
for k

Answer 7

i move the 6?

Answer 8

you solve for k
undo any operation next to k

Answer 9

k is being multiplied by 72
to undo that operation try dividing both sides by 72