ACTIVITY 2: Identify Me! State whether each of the following equations represents a quadratic function or not. Justify your answer. Equations Yes or No Justification 1. y = x² + 3 2. y = 4x-5 3. y = 18 - 38 4. y = 3* +3 5. y = 4x + x2 + 4 6. y = 3* + 4x + 2 7. y = 3x3 8. y = (x - 1)(x + 9) 9. (x - 2)(x + 2) + x2 - y = 0 10. 0 = y + 5x2 – 3x