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To check this, you substitute the values for x and y into the equation. At (1,2) x equals 1 and y equals 2 so substituting this in we get:

x + 2y = 1 + 2(2) = 1 + 4 = 5

And since it equals 5 like in the original equation the point is represented by it.

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13y ago
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Q: Is point 1 2 represented by the equation x plus 2y equals 5?
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