Types of Lines (Parallel, Intersecting, Coinciding)

Front

What are parallel lines?

Back

Lines that never meet and have the same slope.

Front

What are intersecting lines?

Back

Lines that cross each other at one point.

Front

What are coinciding lines?

Back

Lines that lie on top of each other and have the same slope and y-intercept.

Front

If two lines have the same slope, what can we say about them?

Back

They are parallel lines.

Front

If two lines have slopes that are opposite reciprocals, what can we say about them?

Back

They are perpendicular lines.

Front

What is the slope of the line represented by the equation y = 2x + 1?

Back

The slope is 2.

Front

What is the slope of the line represented by the equation y = -3x + 4?

Back

The slope is -3.

Front

How can you determine if two lines are parallel using their equations?

Back

Check if their slopes are equal.

Front

What is the relationship between the slopes of coinciding lines?

Back

They have the same slope and y-intercept.

Front

What does it mean for two lines to be perpendicular?

Back

Their slopes multiply to -1.