Question

For each table, determine whether it shows a direct variation.
If it does, write its direct variation equation.

Answer 1

help please

Answer 2

Direct variation is in the form of
y = kx

where k is the constant of proportionality or constant of variation. Both mean the same thing.

Basically, the same number multiplied to x should give us the y-value.

If you graph the direct variation, it should be a linear line that goes through the origin

Answer 3

this was the one i was difficulty in

Answer 4

y = kx

Plug in an x and a y value in to the equation and solve for k

then plug in the value of k into y = kx

so for example if k = 3, the equation is y = 3x

Answer 5

dang i got it wrong

Answer 6

I said "for example" and listed an example. I hope you didn't put that as an answer choice :P

Answer 7

lol no i didn't i saw that

Answer 8

so, when x = 2, y = 1

let's plug that in

y = kx

1 = 2k

can you solve for k?

Answer 9

yea

Answer 10

what do you get? :P

Answer 11

that you have to count how much it goes up to on both sides then divide that side to the other one