In Exercises 13 - 16 , write an equation of the line passing through potat that parallel the given Graph the equations of the lines to check that they are parallel 13. P(0, - 1), y = - 2x + 3

14. P(3, 8), y = 1/5 (x + 4)

15. P(- 2, 6), x = - 5

16. P(4, 0) , - x + 2y = 12

In Exercises 17 - 20 , write an equation of the line passing through point P that is perpendicular to the given line. Graph the equations of the lines to check that they are perpendlezlar.

17. P(0, 0), y = - 9x - 1

18. P(4, - 6), y = - 3

19. P(2, 3), y - 4 = - 2(x + 3)

20. P(- 8, 0), 3x - 5y = 6