Find the coordinates of the missing endpoint if m is the midpoint of xy: m(-4,8), y(19,0)

The coordinates of X would be (-27, 16)

In order to find this, we need to know that the value of M's points will always be the average of X and Y's points. This is because it is the midpoint. Therefore we can use the following formula.

Value of x coordinate

(X + Y)/2 = M

(X + 19)/2 = -4

X + 19 = -8

X = -27

Then we can do the same for the y values

Value of y coordinate

(X + Y)/2 = M

(X + 0)/2 = 8

X + 0 = 16

X = 16

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80