Completing The Square Already Passed

Which function in vertex form is equivalent to f(x) = 4 + x2 - 2x? {Ans: A. f(x) = (x - 1)2 + 3}Which value is needed to create a perfect square trinomial from the expression x2 + 8x + _____? {Ans: 4}The function f(x) = x2 + 10x - 3 written in vertex form is f(x) = (x + 5)2 - 28. What are the coordinates of the vertex? {Ans: A. (-5, -28)}How many zero pairs must be added to the function f(x) = x2 - 6x + 1 in order to begin writing the function in vertex form? {Ans: 3}The vertex form of a function is g(x) = (x - 3)2 + 9. How does the graph of g(x) compare to the graph of the function f(x) = x2? {Ans: B. g(x) is shifted 3 units right and 9 units up.}Which statements are true about the graph of the function f(x) = 6x - 4 + x2? Check all that apply. {Ans: The vertex of the function is (-3, -13). (2nd) The graph increases over the interval (-3, ). (4th)}