Given the endpoint x(11,-2) and the midpoint (4,3) find the missing endpoint y. Write answer as order pair.

9514 1404 393

  (-3, 8)

Step-by-step explanation:

For m the midpoint of xy, we have ...

  m = (x+y)/2   ⇒   y = 2m-x

  y = 2(4, 3) -(11, -2) = (2·4 -11, 2·3 +2)

  y = (-3, 8)

b or 2, just plug these equations into your graphing calculator then check the graph to see the image. if it matches up then that's your answer!

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!