Writing Parallel and Perpendicular Equations of Lines.

Front

What do two lines that are perpendicular have in common regarding their slopes?

Back

Slopes that are opposite reciprocals.

Front

If a line is perpendicular to the equation y = 2x - 7, what is the slope of this line?

Back

-1/2.

Front

What do two lines that are parallel have in common regarding their slopes?

Back

Slopes that are the same.

Front

If a line is parallel to the equation y = 2x - 7, what is its slope?

Back

2.

Front

Write the equation of a line PERPENDICULAR to y = -2x + 1 that passes through the point (2, 3).

Back

Front

What is the slope of a line that is perpendicular to a line with a slope of 3?

Back

-1/3.

Front

What is the slope of a line that is parallel to a line with a slope of -4?

Back

-4.

Front

If the slope of a line is 0, what type of line is it?

Back

A horizontal line.

Front

If the slope of a line is undefined, what type of line is it?

Back

A vertical line.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back