Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint. (hint: Let (x, y) be the unknown endpoint. Apply the midpoint formula, and solve the two equations for X and y.) midpoint (3,9), endpoint (10,15) The other endpoint is?

  (x, y) = (-4, 3)

Step-by-step explanation:

For midpoint M of segment AB, we must have ...

  M = (A+B)/2

  2M = A+B

  B = 2M -A

In terms of x and y, for the given points, we have ...

  (x, y) = 2(3, 9) -(10, 15) = (6-10, 18-15)

  (x, y) = (-4, 3)

what are the options? ?

step-by-step explanation:

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a