Question 1204092
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Use the midpoint formula and formal algebra if you want to solve the problem.<br>
But it is much easier -- and you will have a better understanding of HOW you are solving the problem -- if you work the problem informally.<br>
M is the midpoint of XY, so when you move from Y(-8,6) to M(-3,-1) you have gone halfway from Y to X.<br>
In doing that, your x value has changed from -8 to -3, a change of +5, so to get to X the x value needs to again change by +5; -3+5 = 2.  So the x coordinate of X is 2.<br>
And in doing that, your y value has changed from 6 to -1, a change of -7, so to get to X the y value needs to again change by -7; -1-7 = -8.  So the y coordinate of X is -8.<br>
ANSWER: X (2,-8)<br>