Parallel and Perpendicular Lines

Front

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

Back

y-intercept

Front

Slopes of parallel lines are...

Back

the same.

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

y = 3x + 2
y = 3x - 3
These lines are...

Back

Parallel

Front

y = 6x + 2
y = -6x + 2
These lines are...

Back

Neither

Front

y = -2/3x + 2
y = 3/2x + 9
These lines are...

Back

Perpendicular

Front

If the lines are parallel to each other and the slope of the blue line is 1/4, what is the slope of the purple line?

Back

Front

Back

-2

Front

Back

Front

What is the slope of the graphed line?

Back

0