Algebra-1

Question Analysis
This question assesses the student's ability to find the y-intercept of a quadratic function in vertex form by substituting into the function.

Key Concept Explanation
The y-intercept of a quadratic function in the form can be found by substituting into the function and solving for .

Step-by-step Solution
1. Identify the quadratic function:
2. Substitute into the function:

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