if the slope of line p is 1/5 and the slope of line q is -5 then what is true about lines p and q ( assume lines p and q are coplanar)
a they are parallel
b they are perpendicular
c they are neither a or b
d they are skew lines

Question

if the slope of line p is 1/5 and the slope of line q is -5 then what is true about lines p and q ( assume lines p and q are coplanar)
a they are parallel 
b they are perpendicular 
c they are neither a or b
d they are skew lines

nincompoop · Answer

perpendicular two lines are negative reciprocal to each other

nincompoop · Answer

if a line has a slope of 3, then a perpendicular line to it would have a slope of -1/3

anonymous · Answer

so its a

nincompoop · Answer

another example,
if a line has a slope of -2/5 it's negative reciprocal would be -(5/-2) which is the same as 5/2

anonymous · Answer

that's perpendicular right

nincompoop · Answer

I don't want to tell you what the answer is, it is a form of CHEATING. I want you to figure out the answer based on the information and concept I am providing you.

nincompoop · Answer

what is the reciprocal of 1/5?

anonymous · Answer

5/1 so its perpendicular because they second line is negative which makes it -5/1?

nincompoop · Answer

correct -5/1 is the negative reciprocal of 1/5

anonymous · Answer

yay so its b, thank you!!

anonymous · Answer

can you help me with another?