Question 174041
parallel lines have equal slopes and perpendicular lines have slopes which are  negative inverses of each other
:
y=8x-5.......eq 1
y=(1/8)x+1....eq 2
y=-8x+2......eq 3

 we have slopes of 8,(1/8), and -8 


equations 2 and 3 are perpendicular to each other since their slopes are negative inverses of each other.

there is no other parallel or perpendicular lines