Parallel and Perpendicular Lines

Front

What does 'b' represent in the equation y=mx+b?

Back

y-intercept

Front

What is the slope of a horizontal line?

Back

0

Front

If two lines are parallel, what can be said about their slopes?

Back

The slopes are the same.

Front

What is the slope of a vertical line?

Back

Undefined

Front

If the slope of one line is 1/4, what is the slope of a line parallel to it?

Back

1/4

Front

What is the relationship between the slopes of perpendicular lines?

Back

They are opposite reciprocals.

Front

Calculate the slope of the line passing through points A(1, 2) and B(3, 6).

Back

2

Front

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

Back

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

Front

If the slope of line AB is -2/3, what is the slope of a line perpendicular to it?

Back

3/2

Front

What does it mean for two lines to be parallel?

Back

They never intersect and have the same slope.