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.

Difficulty: Medium

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

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