Parallel and Perpendicular Lines

Front

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

Back

Slope.

Front

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

Back

Y-intercept.

Front

Write the equation for the line in slope-intercept form with a slope of 4 and a y-intercept of 3.

Back

y = 4x + 3.

Front

What slope is perpendicular to m = 5/8?

Back

-8/5.

Front

Slopes of parallel lines are...

Back

The same.

Front

What is the slope of a line that is horizontal?

Back

0.

Front

What is the slope of a line that is vertical?

Back

Undefined.

Front

If two lines have slopes of 2 and -1/2, are they parallel, perpendicular, or neither?

Back

Perpendicular.

Front

What is the relationship between the slopes of two lines that are parallel?

Back

They are equal.

Front

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

Back

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