Equations of Lines Day Two

Front

Perpendicular lines have _____

Back

opposite reciprocal slopes.

Front

Back

intersecting.

Front

Intersecting lines have _____

Back

different slopes.

Front

Coinciding lines have _____

Back

the same slopes and the same y-intercepts.

Front

Parallel lines have _____

Back

the same slopes, but different y-intercepts.

Front

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

Back

-\frac{1}{3}.

Front

If two lines have slopes of 2 and -\frac{1}{2}, are they perpendicular?

Back

Yes, because their slopes are opposite reciprocals.

Front

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

Back

-4.

Front

How can you determine if two lines are coinciding?

Back

If they have the same slope and the same y-intercept.

Front

What does it mean for two lines to be parallel?

Back

They never intersect and have the same slope.