How do you do a coordinate graph faster?

The x-axis goes left and right, the second coordinate is on the y-axis.The y-axis goes up and down.Positive numbers go up or right (depending on the axis). Negative numbers go left or down.Quadrant I gets (+,+); quadrant I is above and to the left of the y-axis.Quadrant IV gets (+,-); quadrant IV is below the x-axis and to the right of the y-axis. (5,4) is in quadrant I.(-5,4) is in Quadrant II. (-5,-4) is in Quadrant III. (5,-4) is in Quadrant IV.

50÷5=10
10×2=20
two fifths equals twenty
your answer is 20