HARMONY LOOKS LIKE? A A SINGLE LINE OF NOTES
B PLAYING XYLOPHONE BARS ONE AT A TIME
C NOTES STACKED ON TOP OF EACH OTHER

C

Explanation:

a harmony is several different pitched notes playing at the same time

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.

the answer is b.

by: nicholas