Why are there so many questions today.. like are u guys on christmas break???

I think it's because nobody went over their stuff over the weekend and they need help.

Explanation:

the main thing           is the answer what you saw the most is it and i forgot what it's called sorry my friend told me this

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.