SOLUTION: The midpoint of the line segment from P1 to P2 is (-3,1). If P1=(-3,8). What is P2?

Question 1123265: The midpoint of the line segment from P1 to P2 is (-3,1). If P1=(-3,8). What is P2?
Answer by ikleyn(52805) (Show Source): You can put this solution on YOUR website!
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Notice that the segment from P1 to the given midpoint is a vertical line.


It is so, because first coordinate x= -3 is the same for both points P1 and the midpoint.


It means that the second endpoint has the same coordinate x= -3, and half of the problem is just solved in this way.


Thus you only need to determine y-coordinate of the second endpoint, which is easy now, after my hint.


Answer.  P2 = (-3,-6).

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