The coordinates of B are (-6,6), using the midpoint concept.
<h3>Midpoint</h3>
The midpoint of two points is given by the mean of the coordinates of these two points.
This is applicable for both the x-coordinate and for the y-coordinate, that is, we have to find the mean of each of the coordinates.
In the context of this problem, we have that:
- The mean of the x-coordinates is of -1.
- One of them is of 4, and the other is of x.
Hence the x-coordinate of B is calculated as follows:
-1 = (4 + x)/2
4 + x = -2
x = -6.
For the y-coordinate, we have that:
- One of them is of 8, and the other is of y.
Thus the y-coordinate of B is calculated as follows:
7 = (8 + y)/2
8 + y = 14
y = 6.
Thus the coordinates are:
B(-6,6).
More can be learned about the midpoint concept at brainly.com/question/25886396
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