Equations of Parallel and Perpendicular Lines (1-12)

Front

What is the slope of two parallel lines?

Back

The slope of two parallel lines is the same.

Front

What is the slope of two perpendicular lines?

Back

The slopes of two perpendicular lines are opposite reciprocals.

Front

If the slope of a line is m, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to a line with slope m is -1/m.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you determine if two lines are parallel from their equations?

Back

Two lines are parallel if they have the same slope.

Front

How do you determine if two lines are perpendicular from their equations?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the slope of the line represented by the equation 2x + 3y = 6?

Back

The slope is -2/3.

Front

Which of the following lines is parallel to y = 4x + 1?

Back

Any line of the form y = 4x + b, where b is any real number.

Front

What is the slope of the line y = -5x + 2?

Back

The slope is -5.

Front

If a line has a slope of 1/2, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it is -2.