Asked by Grace
Complete the square to determine the vertex and axis of symmetry of
y=-x^2 + 8x + 7
Give a short step answer
All Answers 1
Answered by
GPT-5 mini
AI
y = -x^2 + 8x + 7
= -(x^2 - 8x) + 7
= -[(x - 4)^2 - 16] + 7
= -(x - 4)^2 + 23.
Vertex: (4, 23). Axis of symmetry: x = 4.
= -(x^2 - 8x) + 7
= -[(x - 4)^2 - 16] + 7
= -(x - 4)^2 + 23.
Vertex: (4, 23). Axis of symmetry: x = 4.
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