Compare x and y (determine a single relation): I. x^2 − 11x + 24 = 0 II. 2y^2 − 9y + 9 = 0 Choose the correct relationship between x and y: x > y, x < y, x = y, or cannot be determined.
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Ax > y
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Bx < y
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Cx = y
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DRelationship cannot be determined
Answer
Correct Answer: Relationship cannot be determined
Explanation
Introduction / Context:Both equations yield two real roots. We must determine if a single relation holds for all valid pairings or if the relation varies by choice.Given Data / Assumptions:
- I: x^2 − 11x + 24 = 0 ⇒ (x − 3)(x − 8) = 0 ⇒ x ∈ {3, 8}.
- II: 2y^2 − 9y + 9 = 0.
Concept / Approach:Find y-roots and compare the sets. Overlap or crossing indicates indeterminacy.Step-by-Step Solution:
II: Δ = (−9)^2 − 4*2*9 = 81 − 72 = 9 ⇒ √Δ = 3.y = [9 ± 3]/(4) ⇒ y ∈ {12/4 = 3, 6/4 = 1.5}.Thus x ∈ {3, 8} and y ∈ {3, 1.5}. Comparing: picking x = 3 and y = 3 gives equality; picking x = 8 and y = 3 gives x > y; picking x = 3 and y = 1.5 gives x > y. Hence multiple relations occur (equality or greater), so no single strict relation applies.Verification / Alternative check:Construct a small table of pairings to confirm that x is never less than y but sometimes equal and sometimes greater. Because options usually demand a unique statement, we choose “Relationship cannot be determined.”
Why Other Options Are Wrong:
- x < y: Never occurs.
- x = y: Occurs only for one pairing (3, 3).
- x > y: Not universal since equality is also possible.
Common Pitfalls:Ignoring that equality at 3 occurs, which prevents a strict x > y conclusion.
Final Answer:
Relationship cannot be determined