Parallel and Perpendicular Lines BASICS

Front

What does 'm' represent in the equation y=mx+b?

Back

Slope.

Front

Parallel lines have _________________ slope.

Back

The Same.

Front

What are the slopes of perpendicular lines?

Back

Opposite reciprocals.

Front

If the slope of one line is 1/4, what is the slope of a line parallel to it?

Back

Front

In the equations y = -2/3x + 2 and y = 3/2x + 9, what is the relationship between the lines?

Back

Perpendicular.

Front

What is the slope of a line that is horizontal?

Back

0.

Front

What is the slope of a line that is vertical?

Back

Undefined.

Front

If two lines have slopes of 2 and -1/2, are they parallel, perpendicular, or neither?

Back

Perpendicular.

Front

What is the formula for the slope between two points (x1, y1) and (x2, y2)?

Back

Front

What does it mean for two lines to be parallel?

Back

They never intersect and have the same slope.