Week 2: Parallel, Perpendicular or Neither Lines

Front

Parallel lines have __________ slopes

Back

Equal

Front

What is the distance between the two points (3, 4) and (9, 10)?

Back

6.3

Front

What is the slope of a line perpendicular to a line with slope -6/5?

Back

5/6

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

Find the slope of the line that passes through (10, 1) and (5, 2)

Back

-1/5

Front

The slope of a line is defined as...

Back

the ratio of the rise (change in y) to the run (change in x).

Front

If two lines are parallel, their slopes are...

Back

equal.

Front

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

Back

-1/2

Front

The formula to calculate the slope (m) between two points (x1, y1) and (x2, y2) is...

Back

m = (y2 - y1) / (x2 - x1).

Front

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

Back

-1.