AlgebraVery hardGraphical solution: which region
Algebra practice question
In the xy-plane, which point is in the solution set of the system y ≥ x − 1 and y ≤ −2x + 8?
- A. (2, 3)Correct
- B. (4, 4)
- C. (0, 9)
- D. (5, 1)
Answer: A. (2, 3)
(2, 3): 3 ≥ 1 ✓ and 3 ≤ 4 ✓.
Why the other answers are wrong
- B. (4, 4)
- (4, 4): 4 ≤ 0 is false.
- C. (0, 9)
- (0, 9): 9 ≤ 8 is false.
- D. (5, 1)
- (5, 1): 1 ≥ 4 is false.
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