Horizontal & Vertical Lines

Front

What is the equation of a vertical line?

Back

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

Front

What is the equation of a horizontal line?

Back

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

Front

Identify the type of line: x = 4

Back

Vertical

Front

Identify the type of line: y = 10

Back

Horizontal

Front

What does the graph of y = -4 represent?

Back

A horizontal line that crosses the y-axis at -4.

Front

What does the graph of x = -5 represent?

Back

A vertical line that crosses the x-axis at -5.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

If a line is vertical, what can you say about its x-coordinates?

Back

All points on a vertical line have the same x-coordinate.

Front

If a line is horizontal, what can you say about its y-coordinates?

Back

All points on a horizontal line have the same y-coordinate.