The coordinates of point B are (-9, -9)
From the question, we are to determine the coordinates of point B
Given a line with endpoints (x₁, y₁) and (x₂, y₂)
The midpoint of the line is ((x₁+x₂)/2 , (y₁+y₂)/2)
Thus,
From the given information,
Midpoint of AB is (-2,-3)
and
A = (5,3)
Let the coordinates of point B be (x₁, y₁)
Then,
-2 = (5 + x₁)/2
-4 = 5 + x₁
x₁ = -4 - 5
x₁ = -9
Also,
-3 = (3 + y₁)/2
-6 = 3 + y₁
y₁ = -6 - 3
y₁ = -9
Hence, the coordinates of point B are (-9, -9)
Learn on Midpoint of a line here: https://brainly.com/question/18315903
#SPJ1