I need help with this i need to know the answer to X on the other side of +2

Answer:
Let's select two points on the graph,
7/-2 and 5/-1
let's subtract them from each other so we can find both x and y's change
7 - 5 2 = change in y
_______ =
-2 - ( -1 ) -1 = change in x
Now the slope is rise over run, and we already solved for the slope just by finding out the change in y and x, so 2/-1 = -2 is your slope