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The question is asking which of the given options is not a quadratic inequality.

### Explanation:
1. **Quadratic inequalities** involve an inequality sign (>, <, ≥, ≤) with a quadratic expression (e.g., \( ax^2 + bx + c \)).
2. Let's analyze each option:
   - **Option 1: \( y > 7x^2 + 5x - 7 \)**: This is a quadratic inequality because it has a quadratic expression and an inequality sign.
   - **Option 2: \( y = 7x^2 + 5x - 7 \)**: This is an equation, not an inequality, because it uses an equal sign instead of an inequality sign.
   - **Option 3: \( y < 7x^2 + 5x - 7 \)**: This is also a quadratic inequality due to the inequality sign.

### Conclusion:
- **The answer is Option 2: \( y = 7x^2 + 5x - 7 \)** because it is not an inequality; it's a quadratic equation.**

Would you like further details or have any questions?

### Related Questions:
1. What are the steps to solve a quadratic inequality?
2. How can we graph quadratic inequalities?
3. What are the key differences between quadratic equations and quadratic inequalities?
4. How do you determine the solution set for quadratic inequalities?
5. How can inequalities be represented on a number line?

**Tip:** Inequalities describe ranges of values, while equations define specific values or points.

Learn how to differentiate between quadratic inequalities and equations with a detailed explanation and solution. This question covers key algebraic concepts related to quadratic expressions and inequalities. Suitable for students in Grades 8-10.

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