Find the coordinates for the point on the submarine. Move the x slider to the right for positive numbers and to the left for negative numbers. Once you have moved the x slider to the correct position, the y slider will show. Move the y slider to the right for positive numbers and to the left for negative numbers.
Use the coordinate pair to plot the point on the coordinate plane. Use the purple slider to set the x axis and the blue slider to set the y axis. Click plot point when you are done.