Is the line through points p(3,2) and Q(2,3) perpendicular to the line through points R(10,1) and S(15,6)?
Mathematics
Greyshowjumper
Question
Is the line through points p(3,2) and Q(2,3) perpendicular to the line through points R(10,1) and S(15,6)?
1 Answer

1. User Answers crisforp
The slope of line PQ is m1 = ( 3  (3) ) / (2  (2) ); then m1 = 6/4 = 3/2;
In the same way, the slope of line RS is m2 = 7/5;
But (3/2) x (7/5) = 21/10, which is diferrent from  1;
So, the lines aren't perpendicular.