Horizontal and Vertical Graphs

Front

What is a horizontal line in a graph?

Back

A horizontal line is a straight line that runs from left to right across the graph. 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 in a graph?

Back

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

Front

What does the equation y = 5 represent on a graph?

Back

The equation y = 5 represents a horizontal line that crosses the y-axis at 5.

Front

What does the equation x = 2 represent on a graph?

Back

The equation x = 2 represents a vertical line that crosses the x-axis at 2.

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 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

If a line has the equation y = -1, what does it look like on a graph?

Back

The line y = -1 is a horizontal line that crosses the y-axis at -1.

Front

If a line has the equation x = -5, what does it look like on a graph?

Back

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