Algebra-1

Question Analysis
This question tests the student's ability to find the y-intercept of a quadratic function given in vertex form. The y-intercept is the value of the function when .

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

Step-by-step Solution
1. Identify the given quadratic function:
2. Set and substitute it into the function:

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