AlgebraEasyPair satisfying two simple equations
Algebra practice question
Which ordered pair (x, y) satisfies both x = 4 and x + y = 9?
- A. (4, 5)Correct
- B. (5, 4)
- C. (4, 9)
- D. (9, 0)
Answer: A. (4, 5)
x = 4, and then 4 + y = 9 gives y = 5.
Why the other answers are wrong
- B. (5, 4)
- x must be 4, not 5.
- C. (4, 9)
- 4 + 9 = 13, not 9.
- D. (9, 0)
- x must be 4.
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