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2 years ago

Find the coordinates of point E if C is the midpoint of AE A has the coordinates of (-3,1) C has the coordinates of (-2,-1)

1 answer:

7 0

$coordinates\ of\ E(x,y)\\\\ 
midpoint:\ C(-2,-1)\\
endpoint:\ A(-3,1) \\\\ 
B(-2,-1)=(\frac{-3+x}{2}\ ;\ \frac{1+y}{2})\\\\
-2=\frac{-3+x}{2}\ \ | multiply\ by\ 2\\
-4=-3+x\ \ | add\ 3\\
-1=x\\\\
-1=\frac{1+y}{2}\ \ | multiply\ by\ 2\\
-2=1+y\ \ \ | subtract\ 1\\
-3=y\\\\Coordinate\ of\ C=(-1,-3)$

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Step-by-step explanation:

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