We will use slope intercept form y=Mx+b
M is slope and b is y intercept
So you need a y intercept.
Where does go thro the y axis? +1
From that point how much should you go down and right until you get to the graph again (this is the slope).
Down 1= -1 and right 2= 2. So slope is -1/2
Now write it in the form
Y=-1/2x + 1 is the answer
