Parallel and Perpendicular Lines in the Coordinate Plane

Front

What are parallel lines in the coordinate plane?

Back

Parallel lines are lines in the same plane that never intersect and have the same slope.

Front

What are perpendicular lines in the coordinate plane?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees) and have slopes that are negative reciprocals of each other.

Front

How do you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope.

Front

How do you determine if two lines are perpendicular?

Back

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

Front

What is the slope of the line y = 2x + 3?

Back

The slope is 2.

Front

What is the slope of the line y = -3x + 4?

Back

The slope is -3.

Front

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

Back

The slope of the perpendicular line is -2.

Front

Write the equation of a line that is parallel to y = 5 and passes through (3, 2).

Back

y = 5.

Front

Write the equation of a line that is perpendicular to y = -x + 1 and passes through (4, 2).

Back

y = x - 2.

Front

What is the slope of the line y = 4x + 1?

Back

The slope is 4.