Horizontal and vertical lines

Front

What is the equation of a horizontal line?

Back

The equation of a horizontal line is in the form y = k, where k is a constant.

Front

What is the equation of a vertical line?

Back

The equation of a vertical line is in the form x = k, where k is a constant.

Front

How can you identify a horizontal line on a graph?

Back

A horizontal line runs parallel to the x-axis and has a constant y-value.

Front

How can you identify a vertical line on a graph?

Back

A vertical line runs parallel to the y-axis and has a constant x-value.

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 type of line runs parallel to the x-axis?

Back

A horizontal line.

Front

What type of line runs parallel to the y-axis?

Back

A vertical line.

Front

If a line has the equation y = 3, what type of line is it?

Back

It is a horizontal line.

Front

If a line has the equation x = -2, what type of line is it?

Back

It is a vertical line.