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. It has a constant y-value and can be represented by the equation y = k, where k is a constant.

Front

What is a vertical line?

Back

A vertical line is a straight line that runs up and down the page. It has a constant x-value and can be represented by the equation x = k, where k is a constant.

Front

What is the equation of a horizontal line that passes through the point (0, -1)?

Back

y = -1

Front

What is the equation of a vertical line that passes through the point (2, 0)?

Back

x = 2

Front

How can you identify a horizontal line on a graph?

Back

A horizontal line can be identified by its flat appearance, running parallel to the x-axis, and having the same y-coordinate for all points.

Front

How can you identify a vertical line on a graph?

Back

A vertical line can be identified by its straight up-and-down appearance, running parallel to the y-axis, and having the same x-coordinate for all points.

Front

What does the equation y = 3 represent?

Back

It represents a horizontal line that crosses the y-axis at 3.

Front

What does the equation x = -1 represent?

Back

It represents a vertical line that crosses the x-axis at -1.

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 = 4, what type of line is it?

Back

It is a vertical line.