popcornseeds popcornseeds
  • 23-09-2020
  • Mathematics
contestada

The midpoint of AB is M=(-1, -3). One endpoint is A=(3, -1).
Find the coordinates of the other endpoint, B.
A (3.-1).
M(-1, -3)
B (?, ?).

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 25-09-2020

Answer:

B(-5, -5)

Step-by-step explanation:

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

x-coordinate:

(3 + x)/2 = -1

3 + x = -2

x = -5

y-coordinate:

(-1 + y)/2 = -3

-1 + y = -6

y = -5

B(-5, -5)

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