If the quantity of the variable on the y-axis increases by 10 when the quantity of the variable on the x-axis decreases by 2,then the slope of the curve equals
A) 2.
B) -10.
C) 10.
D) -5.
E) None of the above answers is correct.

Question

Quizplus · Accepted Answer

The slope of a curve is calculated as the change in the y-variable divided by the change in the x-variable. Here, the y-variable increases by 10 when the x-variable decreases by 2, so the slope = 10 / (-2) = -5.

If the Quantity of the Variable on the Y-Axis Increases