medium · SAT Math
The function f is defined by f(x) = x^2 - 6x + 5. Which of the following equivalent forms of f displays the coordinates of the vertex of the graph of y = f(x) as constants or coefficients?
- f(x) = (x - 5)(x - 1)
- f(x) = (x - 3)^2 - 4
- f(x) = x(x - 6) + 5
- f(x) = x^2 - 6x + 5
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