Homework: 8th 9th due Monday 3/22

Answer the following questions true or false:

1) 2 lines that are parallel have the same slope

2) 2 lines that are perpendicular have the same slope

3) Parallel lines must have the same y-intercept

4) If a line has a slope of 3, a line parallel to it has a slope of -3

5) If a line has a slope of -2, a line perpendicular to that has a slope of .5

6) If a line has a slope of -1, a line perpendicular to that has a slope of 1

7) All perpendicular lines have the same y-intercept

If y = -5x + 4 is the equation of a line, then y = -5x is a line parallel t it

9) The lines x = 3 and x = -16 are parallel

10) The lines y – 2x = 7 and y = 2x – 89 are parallel

11) y= 6x + 4 is perpendicular to y = 4x – 6

12) The y-intercept of y = 3x – 3 is the origin

13) The slope of 4y = 4x + 10 is 4

GOOD LUCK!!!