The midpoint of a segment is(2,1) and one endpoint (8,7).find the coordinates of the other endpoint

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Which of the following graphs represents the function f(x) = 2^x

Solve the given system of equations. 2y= -x+9 , 3x-6= -15