Understanding Linear Functions

Which of the following equations represents a linear function?

Which of the following is a characteristic of a linear function?

• It has a constant slope.

• It forms a parabola.

• It has a variable slope.

• It forms a circle.

• It is the y-intercept.

• It is the slope.

• It is the dependent variable.

• It is the independent variable.

If the slope of a linear function is zero, what does the graph of the function look like?

• A vertical line

• A horizontal line

• A diagonal line

• A curved line