Answer:
Use the equation y=mx+b
Explanation:
So you know how to get the slop, which is awesome 
Now to get y all you have to do is use the equation: 
y=mx+b 
m being slop 
b being y- intercept in this case being 2 
so you have y=-2x+2 
all you have to do is insert different x values and solve the equation for y and see if they match up together in any of the tables