Point J has coordinates 10 comma 8. The midpoint of the line segment J K is 6 comma 12.



What are the coordinates of point K ?

1 answer

To find the coordinates of point K, we can use the midpoint formula, which states that the coordinates of the midpoint between two points (x1, y1) and (x2, y2) are ((x1+x2)/2, (y1+y2)/2).

Given that the midpoint of J and K is (6, 12) and J has coordinates (10, 8), we can set up the equation as follows:

((10 + x)/2, (8 + y)/2) = (6, 12)

Simplifying the equation, we get:

(10 + x)/2 = 6
8 + y)/2 = 12

Multiplying both sides of the first equation by 2, we have:

10 + x = 12
x = 12 - 10
x = 2

Multiplying both sides of the second equation by 2, we have:
8 + y = 24
y = 24 - 8
y = 16

Therefore, the coordinates of point K are (2, 16).