Equations of Parallel and Perpendicular Lines

Front

If two lines are parallel their slopes are ____________

Back

the same.

Front

Are these lines parallel?
y = 12x + 4
y = 12x +14

Back

YES

Front

Are these lines parallel?
y = (-1/2)x + 1
y = (1/2)x - 5

Back

NO

Front

Equation of a line through (5,-1) parallel to y = (-3/5)x -3

Back

y = (-3/5)x + 2

Front

Equation of a line through (2,6) parallel to y = -3

Back

y = 6

Front

Are these lines perpendicular?
y = 4x + 2
y = (-1/4)x + 12

Back

YES

Front

Equation of a line passing through (-9,2) and perpendicular to y = 3x - 12

Back

y = (-1/3)x - 1

Front

Slopes of parallel lines are...

Back

identical.

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

What slope is parallel to:  
m = 4

Back

4