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Algebra practice question
Which of the following points lies on the line x = 4 in the xy-plane?
- A. (4, 7)Correct
- B. (7, 4)
- C. (0, 4)
- D. (2, 4)
Answer: A. (4, 7)
Every point on x = 4 has x-coordinate 4.
Why the other answers are wrong
- B. (7, 4)
- This point has x-coordinate 7.
- C. (0, 4)
- This point has x-coordinate 0.
- D. (2, 4)
- This point has x-coordinate 2.
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