When two variables in a graph are related to a third, changing the third causes
A)a movement along the curve.
B)no change in the curve because the third variable isn't on the axes.
C)a shift of the curve.
D)either a shift or a movement in the curve but more information is needed to determine which occurs.
E)None of the above answers is correct.

Question

Quizplus · Accepted Answer

When a third variable, not on the axes, changes, it typically causes a shift of the curve, as it affects the relationship between the two variables on the axes.

When Two Variables in a Graph Are Related to a Third