The coordinates of point A are 400 units of X and 40 units of Y.The coordinates of point B are 480 units of X and 60 units of Y.With X on the horizontal axis and Y on the vertical axis,the slope of the line between points A and B is
A) + 0.25
B) + 4.00
C) + 0.33
D) - 4.00
E) - 0.25

Question

Quizplus · Accepted Answer

The slope of a line is calculated as the change in Y divided by the change in X. Here, the change in Y is 60 - 40 = 20, and the change in X is 480 - 400 = 80. Therefore, the slope is 20/80 = 0.25.

The Coordinates of Point a Are 400 Units of X