Same as any other midpoint of line segment or two points, it is the average of the two points x and y coordinates...
mp=((x1+x2)/2, (y1+y2)/2)
mp=((-6+16)/2, (-9+5)/2)
mp=(10/2, -4/2)
mp=(5, -2)
9 = 2(6) - b
9 = 12 - b
-3 = b
THE ANSWER IS LYFE 3432423
Rate of change refers to moving a certain amount of distance over a certain time period
rate of change= velocity in this case.
52-24=28 books were nonfiction
You must get the ratio if nonfiction to fiction
28/24= 7/6