Coordinate Proofs

Front

What is the formula for finding the midpoint between two points (x1, y1) and (x2, y2)?

Back

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Front

What does a slope of 0 indicate about a line?

Back

A slope of 0 indicates that the line is horizontal.

Front

What does an undefined slope indicate about a line?

Back

An undefined slope indicates that the line is vertical.

Front

If the coordinates of point A are (x1, y1) and point B are (x2, y2), how do you determine if the line segment AB is horizontal?

Back

Front

If the coordinates of point A are (x1, y1) and point B are (x2, y2), how do you determine if the line segment AB is vertical?

Back

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The slopes of two perpendicular lines are negative reciprocals of each other.

Front

What is the slope of a line that rises 3 units for every 4 units it runs?

Back

Front

What is the slope of a line that falls 1 unit for every 5 units it runs?

Back

Front

What is the distance formula between two points (x1, y1) and (x2, y2)?

Back