How to solve
y = a(x − h)² + k puts the vertex at (h, k). The y-intercept is the value at x = 0.
Steps
- Read (h, k) from vertex form for the vertex.
- For the y-intercept, substitute x = 0.
Example
y = 2(x − 1)² + 3
- Vertex (1, 3).
- y(0) = 2(1)² + 3 = 5.
Answer: (1,3) or 5 depending on the prompt
How to type answers
- Vertex as (h,k); y-intercept as an integer
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