Question

Which of the following ordered pairs is a solution of x + 1/2 y = 1

(-2, 6)
(2, -6)
(-2, -6)

Answer 1

The answer is: [A]: " (-2, 6) " .
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Note: The equation is: " x + (1/2) y = 1 " .
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Choice A: (-2, 6). " -2 + (1/2)*6 =? 1 ?
-2 + 3 = 3 − 2 = 1 . Yes!
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Choice B: (2, 6). "2 + (1/2)*(-6) =? 1 ? " ;
2 + (-3) = 2 − 3 = -1 ; NOT "1" ; so rule out choice "B" .
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Choice C: (-2, -6). "-2 + (1/2)*-6 =? 1 ? " ;
-2 + (-3) = -2 − 3 = -5 ; NOT "1" ; so rule out choice "C".
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The answer is: Answer choice: [A]: " (-2, 6) " .
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