Vertical and Horizontal Lines

Front

What is a vertical line?

Back

A vertical line is a straight line that goes up and down. It has an undefined slope and can be represented by an equation of the form x = a, where 'a' is a constant.

Front

What is a horizontal line?

Back

A horizontal line is a straight line that goes left to right. It has a slope of 0 and can be represented by an equation of the form y = b, where 'b' is a constant.

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

What does the equation x = 4 represent?

Back

The equation x = 4 represents a vertical line that passes through the point (4, y) for all values of y.

Front

What does the equation y = -4 represent?

Back

The equation y = -4 represents a horizontal line that passes through the point (x, -4) for all values of x.

Front

If a line has a slope of 0, what type of line is it?

Back

If a line has a slope of 0, it is a horizontal line.

Front

If a line has an undefined slope, what type of line is it?

Back

If a line has an undefined slope, it is a vertical line.

Front

What is the equation of a horizontal line that passes through y = 1?

Back

The equation of the horizontal line is y = 1.

Front

What is the equation of a vertical line that passes through x = 5?

Back

The equation of the vertical line is x = 5.