Question

is (2,4) a solution to my equation y=x-2 ?

Answer 1

Ok try plugging it into the equation and see if you get the same thing
So, input either x or y into the equation and see what you get.
(x,y) so x = 2, y=4
if you plug in x, you should get 4 as an answer. try it.

Answer 2

2-2=4 ?

Answer 3

y = 2 -2
y= 0
4 does not equal 0.
so it's not a solution

Answer 4

yes, you set it up right.

Answer 5

and (-3,-9) y = 3x isn't a solution also?

Answer 6

-9 = 3x
-9/3
-3 = x
Yes it is a solution

Answer 7

or y = 3(-3)
y = -9