Horizontal and Vertical Lines

Front

What is the equation of a vertical line that passes through the point (-4, 0)?

Back

x = -4

Front

What is the equation of a horizontal line that passes through the point (0, 3)?

Back

y = 3

Front

What is the slope of a vertical line?

Back

Undefined

Front

What is the slope of a horizontal line?

Back

Zero

Front

If a line has the equation y = -7, what type of line is it?

Back

Horizontal line

Front

If a line has the equation x = 4, what type of line is it?

Back

Vertical line

Front

What is the general form of the equation for a vertical line?

Back

x = a (where a is a constant)

Front

What is the general form of the equation for a horizontal line?

Back

y = b (where b is a constant)

Front

How do you identify a vertical line on a graph?

Back

It runs up and down and has the same x-coordinate for all points.

Front

How do you identify a horizontal line on a graph?

Back

It runs left to right and has the same y-coordinate for all points.