Question

Which of the statements are true of functions check all that apply all functions have an independent variable, all functions have a dependent variable the range of a function included so mean a vertical line is an example of a functional relationship. A horizontal line is an example of a functional relationship. Each output value of a function can correspond to only one input value.

Answer 1

All functions have dependent variable

All functions have an independent variable.

A horizontal line is an example of a functional relationship.

Explanation:

The dependent variable is "y" and the independent variable is "x".

Vertical lines have undefined slope. Since the value of "x" never changes, a vertical line is not an example of a functional relationship.

In the case of Horizontal lines, for any x-value you get the same y-value. These are called "Constant functions".

Thus the answer to your problem is:

All functions have dependent variable

All functions have an independent variable.

A horizontal line is an example of a functional relationship.