Parallel and Perpendicular Lines

Front

What is the equation of a line parallel to y = 5x + 7 with a y-intercept at (0, -2)?

Back

y = 5x - 2

Front

What do two parallel lines have in common?

Back

They have the same slope.

Front

What do two perpendicular lines have in relation to their slopes?

Back

Their slopes are opposite reciprocals.

Front

Which figure represents parallel lines?

Back

Figure 4.

Front

Which figure represents perpendicular lines?

Back

Figure 2.

Front

Define parallel lines.

Back

Lines that never intersect and have the same slope.

Front

Define perpendicular lines.

Back

Lines that intersect at a right angle (90 degrees).

Front

If the slope of one line is 3, what is the slope of a line parallel to it?

Back

3.

Front

If the slope of one line is 2, what is the slope of a line perpendicular to it?

Back

-1/2.

Front

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

Back

4.