Understanding Slope and Lines

Front

What are alternate interior angles?

Back

Angles on the opposite sides of the transversal.

Front

What is the negative reciprocal of 3/4?

Back

-4/3.

Front

What is a zero slope?

Back

Horizontal.

Front

What is a negative slope?

Back

Falls from left to right.

Front

Determine if AB and CD are parallel, perpendicular, or neither. A(-11, 5), B(-8, 4), C(8, -7), D(-1, -4)

Back

Parallel.

Front

What is the slope of a line that rises from left to right?

Back

Positive slope.

Front

What is the slope of a line that falls from right to left?

Back

Negative slope.

Front

What does a vertical line's slope equal?

Back

Undefined.

Front

What does a horizontal line's slope equal?

Back

Zero.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

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