Algebra-1

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

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

Step-by-step Solution
1. Identify the vertex form of the quadratic function:

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