Horizontal and Vertical Lines

Front

What is a horizontal line?

Back

A horizontal line is a straight line that runs left to right across the page and has a slope of 0.

Front

What is a vertical line?

Back

A vertical line is a straight line that runs up and down the page and has an undefined slope.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

What is the equation of a vertical line that passes through x = 3?

Back

The equation is x = 3.

Front

What is the equation of a horizontal line that passes through y = 4?

Back

The equation is y = 4.

Front

If a line has a slope of 0, what type of line is it?

Back

It is a horizontal line.

Front

If a line has an undefined slope, what type of line is it?

Back

It is a vertical line.

Front

What does it mean for a slope to be undefined?

Back

It means the line is vertical and does not have a defined rise over run.

Front

How can you identify a horizontal line on a graph?

Back

A horizontal line will be parallel to the x-axis.