I'll give you a medal and become your fan. This is the last question and I'm just terrible at this topic.
Is the line through points P(-8,-10) and Q(-5.-12) perpendicular to the line through points R(9,-6) and S(17,-5)? Explain?

Question

I'll give you a medal and become your fan. This is the last question and I'm just terrible at this topic.
Is the line through points P(-8,-10) and Q(-5.-12) perpendicular to the line through points R(9,-6) and S(17,-5)? Explain?

perl · Answer

compare the slopes of the two lines

perl · Answer

slope PQ = -2/3

slope RS = 1/8

perl · Answer

the lines are neither parallel (same slope) nor perpindicular ( negative reciprocal )

woahning · Answer

is it like the y2-y1/x2-x1 formula

perl · Answer

yes

perl · Answer

that is how i calculated the slope

woahning · Answer

okay thank you so much