For all of the following questions, slope is found by using the formula (y2-y1)/(x2-x1)
1. Find the slope of the line which passes through the points (0,0) and (1/3), (7/3)
2. Find the slope of the line which passes through the points (1,1) and (12,11)
3. Find the slope of the line which passes through the points (2,2) and (5,-6)