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The midpoint of AB is M(-2, 5). If the coordinates of A are (1, 7), what are the coordinates of B?

User Traore
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1 Answer

6 votes

Answer:

(-5, 3)

Explanation:

The midpoint formula:
((x_1 + x_2)/(2) , (y_1 + y_2)/(2))

Now, if we work backwards, starting with the x-coordinate

-2 * 2 = -4 - 1 = -5

Then, the y-coordinate

5 * 2 = 10 - 7 = 3

We reach our answer of (-5, 3). A good habit would be to plug these points back into the formula to check if your answer is correct.

User Dyachenko
by
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