Question

What is the other endpoint for midpoint (17,8) and endpoint (8,-5)?

Answer 1

midpoint = (x1+x2)/2 , (y1+y2)/2

17 = (x1+8)/2 and 8 = (y1+-5)/2

multiply each side by 2

34 = x1+8 and 16 = y1 -5

subtract 8 from each side on the left equation and add 5 to each side on the right equation

x1 = 26 y1 = 21

endpoint = (26,21)