12B QZZ Parallel & Perpendicular

Front

What is the slope of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What is the slope of perpendicular lines?

Back

The slopes of perpendicular lines are negative reciprocals of each other.

Front

Given the equations y = 3/2x + 2 and y = 2/3x + 6, are these lines parallel, perpendicular, or neither?

Back

Neither.

Front

What is the y-intercept of the line represented by the equation y = 3/2x + 2?

Back

(0, 2)

Front

Are the lines y = -1/3x - 5 and y = 1/3x + 2 parallel, perpendicular, or neither?

Back

Neither.

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.

Front

What does it mean for two lines to be perpendicular?

Back

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

Front

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

Back

If the slopes (coefficients of x) are equal, the lines are parallel.

Front

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

Back

If the slopes are negative reciprocals, the lines are perpendicular.

Front

What is the general form of a linear equation?

Back

The general form is y = mx + b, where m is the slope and b is the y-intercept.