Parallel and Perpendicular Lines

Front

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

Back

y-intercept

Front

Which is the equation of the line that is parallel to the graph of y = 5x + 7 and has a y-intercept at (0, -2)?

Back

y = 5x - 2

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

A line is parallel to y = 2x - 7. What is its slope?

Back

2

Front

What slope is parallel to: m = 4?

Back

4

Front

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

Back

-1/3

Front

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

Back

They are parallel.

Front

What is the slope of a horizontal line?

Back

0

Front

What is the slope of a vertical line?

Back

Undefined

Front

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

Back

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