Wetzel

Math 101

3.5 – Parallel and Perpendicular Lines

Parallel Line –

            Def. –

            Slope –

Perpendicular Line –

            Def. –

            Slope –

Ex.:  Are the lines parallel, perpendicular, or neither?

1.)  x + y = 6                                            2.)  x + 3y = -4                                            3.)  30x + 10y = 17

     x – y = -3                                                  3x + 9y = 8                                                  12x – 4y = 9