Question 91

# Point P (-2, 5) is the midpoint of segment AB. Co-ordinates of A are (-5, y) and B are (x, 3). What is the value of x?

Solution

Mid-point = $$(\frac{x_{1}+x_{2}}{2} , \frac{y_{1}+y_{2}}{2})$$  $$\Rightarrow \frac{-5+x}{2}=-2 \Rightarrow x = -4 + 5 = 1$$

so the answer is option A.