AlgebraEasy–MediumPair that fails an equation
Algebra practice question
Which of the following ordered pairs (x, y) does NOT satisfy the equation 5x + 2y = 40?
- A. (2, 10)Correct
- B. (4, 10)
- C. (8, 0)
- D. (0, 20)
Answer: A. (2, 10)
5(2) + 2(10) = 30, not 40.
Why the other answers are wrong
- B. (4, 10)
- 20 + 20 = 40.
- C. (8, 0)
- 40 + 0 = 40.
- D. (0, 20)
- 0 + 40 = 40.
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