AlgebraEasySystem whose solution is the origin
Algebra practice question
Which of the following systems has the solution (0, 0)?
- A. y = 2x and y = −xCorrect
- B. y = 2x + 1 and y = −x
- C. x = 1 and y = 0
- D. y = x + 1 and y = x + 2
Answer: A. y = 2x and y = −x
Both y = 2x and y = −x pass through the origin.
Why the other answers are wrong
- B. y = 2x + 1 and y = −x
- y = 2x + 1 gives y = 1 at x = 0.
- C. x = 1 and y = 0
- x = 1 is not 0.
- D. y = x + 1 and y = x + 2
- Parallel lines: no solution at all.
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