Consider a Diagram in Which the Variable Measured on the Y-Axis

Multiple Choice

Consider a diagram in which the variable measured on the y-axis remains constant while the variable measured on the x-axis increases. The graph of these two variables is a

A) line that has positive slope.
B) non-existent because the two variables are not related.
C) vertical line.
D) line that has a negative slope.
E) horizontal line.