Answer:
for the first question you have to do rise over run so for that what you do is find 2 good points that cross over the graph once you find those to points go to the first point and count up until you get to that second point on the line after that you have to go left or right to reach the point. that will be your rise over run you count up and then you count left or right.
Hope that helped
*befri.stends
Explanation: