9514 1404 393
Answer:
11. (-4, -1)
12. (2, 7)
Step-by-step explanation:
The midpoint is the average of the end point coordinates. For segment AB, the midpoint M is ...
M = (A+B)/2
If you have A and M, you can find the other end point B from ...
2M = A+B . . . . multiply the above equation by 2
B = 2M -A . . . . subtract A from both sides
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11. The midpoint (M) is ...
M = ((-1, 2) +(-7, -4))/2 = (-1-7, 2-4)/2 = (-8, -2)/2
M = (-4, -1)
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12. The missing end point is ...
Z = 2Y -X
Z = 2(-4, 8) -(-10, 9) = (2(-4)+10, 2(8) -9)
Z = (2, 7)
