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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?
Answer & Solution
Correct Answer:
Option
A
$$\eqalign{ & \Rightarrow {\text{mid point co - ordinate}}\left( {\frac{{ - 5 + x}}{2},\,\frac{{y + 3}}{2}} \right) \cr & \Rightarrow \frac{{ - 5 + x}}{2} = - 2 \cr & \Rightarrow - 5 + x = - 4 \cr & \Rightarrow x = 1 \cr} $$
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