Answer:
you see on the bottom right that where you plot 2, -1 start at the x axis go across 2 spaces and go down one.
for -3,5 go to the to left that is where you're going to plot -3,5 start at the x axis go across three spaces and go up 5 spaces.
For the last one I don't know whether it says 6,6 or 8,8 but to get either of those space you would go to the top right start at the x axis go across 6 or 8 spaces and go up 6 or 8 spaces
Explanation: