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02.07.2021 •
Mathematics
If Q is the midpoint of PR, find the coordinates of R if P(11,-2) and Q(4,3).
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Ответ:
R = (-3, 8).
Step-by-step explanation:
Recall the midpoint formula:
Where M is the midpoint, (x₁, y₁) is one point and (x₂, y₂) is another.
We are given that Q is the midpoint of PR, where P = (11, -2) and Q = (4, 3) and we want to find the coordinates of R.
Substitute Q for M and let P(11, -2) be (x₁, y₁). Hence:
Split into two separate equations:
Solve for each case:
Therefore, our second point (x₂, y₂) is (-3, 8).
Hence, R = (-3, 8).
Ответ: