Vertical and Horizontal Lines

Front

What is a horizontal line?

Back

A horizontal line is a straight line that runs from left to right across the graph. It has a slope of 0.

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 a vertical line?

Back

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

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

What does the slope of a horizontal line indicate?

Back

The slope of a horizontal line indicates that there is no change in the y-value as the x-value changes.

Front

What does the slope of a vertical line indicate?

Back

The slope of a vertical line indicates that there is no change in the x-value as the y-value changes.

Front

How do you identify a horizontal line on a graph?

Back

A horizontal line can be identified by its constant y-value across all x-values.

Front

How do you identify a vertical line on a graph?

Back

A vertical line can be identified by its constant x-value across all y-values.

Front

What is the graph of the equation y = 4?

Back

The graph of the equation y = 4 is a horizontal line that crosses the y-axis at 4.

Front

What is the graph of the equation x = 5?

Back

The graph of the equation x = 5 is a vertical line that crosses the x-axis at 5.