vertical and horizontal lines

Front

What is the equation of a line with a zero slope?

Back

The equation of a line with a zero slope is of the form y = b, where b is the y-intercept.

Front

What is the equation of a line with an undefined slope?

Back

The equation of a line with an undefined slope is of the form x = a, where a is the x-intercept.

Front

Which type of line runs parallel to the x-axis?

Back

Horizontal line.

Front

Which type of line runs parallel to the y-axis?

Back

Vertical line.

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

How do you graph the equation y = 7?

Back

Graph a horizontal line that crosses the y-axis at 7.

Front

How do you graph the equation x = -3?

Back

Graph a vertical line that crosses the x-axis at -3.

Front

What is the general form of a linear equation?

Back

The general form of a linear equation is Ax + By = C.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and never intersect.