First, we can take the points (0,10), (-4,8) and (2,11) to find the slope, and then find the linear equation using the third point.
now that we have that the first slope is m = 1/2, we can use the point (2,11) to find the linear equation:
we can see that the three points fit the equation:
if we do the same with the points (-3,-3), (-1,1) and (2,7), we get:
therefore, the two linear functions found are y = 1/2 x +10 and y=2x+3