Unit 8 Review

(a)   lines never intersect and have equal slopes.

(a)   lines intersect at 90° angles and have opposite reciprocal slopes.

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• parallel:

  y = 2/3 x -7

  Perpendicular:

  y = -3/2 x -3

• parallel:

  y = 2 x - 6

  Perpendicular:

  y = -1/2 x - 2

• parallel:

  y = -2/3 x -7

  Perpendicular:

  y = 3/2 x -3

• parallel:

  y = -2/3 x - 6

  Perpendicular:

  y = 3/2 x -2

• parallel:

  y = 4 x + 7

  Perpendicular:

  y = -1/4 x + 3

• parallel:

  y = 1/4 x + 7/4

  Perpendicular:

  y = -4 x + 23

• parallel:

  y = 1/4 x + 2

  Perpendicular:

  y = -4 x + 17

• parallel:

  y = x - 3

  Perpendicular:

  y = - x + 5