1. an equation of a line perpendicular to the line represented by the equation y=-1/2x-5 and passing through (6,-4) is
a. -1/2x+4
b. -1/2+1
c. y=2x+14
d. y=2x-16

2. consider the line given by the equation 5x+2y=8. which of the following gives the equation a line parallel to the given line but with a different y-intercept
a. y=-5/2x+4
b. y=-5/2x+8
c. y=-2/5x+4
d. y=-2/5x+8

3. which two lines are perpendicular?
a.) 2x-y=5 b.) 2x+y=3 c.) y=2x+3
a. a and b
b. a and c
c. b and c
d. none of the equations are parallel

4. which kine is perpendicular to the given line? y=2/5x-3
a. 5x+2y=4
b. y=2/5x+3
c. -2/5x+y=5
d. 2x+5y=3