Question

4. two lines are perpendicular when
A. the product of their slopes is -1
B. the product of their slopes is greater than one
C. they have the same slope
D. their slopes are undefined

Answer 1

c c a a are the right answers just took it

Answer 2

Answer: A.

for me the answers were

1) C, -3/4, 4/3

2) D, y=3/5x+4 1/5

3) A, parallel

4) A, the product of their slopes is -1