# How do you find the missing coordinate if the 1st coordinate is (-6, -1) and midpoint is (-1,1)?

Missing coordinate (end point) is $\left(4 , 3\right)$
The first coordinate(start point) is $\left(- 6 , - 1\right)$ and the mid point is $\left(- 1 , 1\right)$ we know the mid point is average of start and end point.
$\therefore - 1 = \frac{x + \left(- 6\right)}{2} \mathmr{and} x = - 2 + 6 = 4$ and $1 = \frac{y + \left(- 1\right)}{2} \mathmr{and} y = 2 + 1 = 3$ So missing coordinate (end point) is $\left(4 , 3\right)$ [Ans]