Answer:
y = 0.4x - 1.8
Explanation:
To figure out this equation, first, you take the 2x and put it on the other side of the equation like so
2x-5y=9
-2x. -2x
-5y = -2x + 9
Then you divide -2x and 9 by 5 to get the y by itself.
-5y / 5 = -2x /5 + 9/5
-y = -0.4x + 1.8
Now your left with a negative y which you can't have, so you times everything by negative one, which will fix it.
-y x -1 = -0.4x x -1 + 1.8 x -1
Now your left with the correct equation, which is
y = 0.4x - 1.8