Algebrahard · Past Paper
The vertex of y = x^2 - 4x + 5 is:
A(2, 1)
B(-2, 1)
C(2, 5)
D(4, 5)
✓ Correct Answer: A — (2, 1)
x = -b/2a = -(-4)/2 = 2. y = (2)^2 - 4(2) + 5 = 4-8+5 = 1. Vertex is (2, 1).
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