Math 1 - Chapter 4.1 Parallel and Perpendicular Lines

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet. They have the same slope but different y-intercepts.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees). The product of their slopes is -1.

Front

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

Back

Front

How do you determine if two lines are perpendicular using their slopes?

Back

Front

What is the slope of a line formed by two points (x1, y1) and (x2, y2)?

Back

Front

Determine if the segments AB and CD are parallel, perpendicular, or neither: AB formed by (1,2) and (3,4), CD formed by (2,3) and (4,5).

Back

Parallel.

Front

Determine if the segments AB and CD are parallel, perpendicular, or neither: AB formed by (0,0) and (1,1), CD formed by (0,1) and (1,0).

Back

Perpendicular.

Front

What is the slope-intercept form of a line?

Back

Front

How can you convert the standard form of a line to slope-intercept form?

Back

Front

What does it mean for two lines to be neither parallel nor perpendicular?

Back

Two lines are neither parallel nor perpendicular if they intersect at an angle that is not 90 degrees and do not have the same slope.