The graph of the function f in the xy-plane above is a parabola. Which of the following defines f ?

y=-(x-3)^2+a In the equation above, a is a constant. The graph of the equation in the xy-plane is a parabola. Which of the following is true about the parabola?

y=x^2-a In the equation above a is a positive constant and the graph of the equation in the xy-plane is a parabola. Which of the following is an equivalent form of the equation?

The graph of the function f(x)=-(1)/(2)(x+4)(x+8) in the xy-plane is a parabola. Which of the following is an equivalent form of function f in which the maximum value of the function appears as a constant?

The function f is defined by f (x) = (x + 3)(x + 1). The graph of f in the xy-plane is a parabola. Which of the following intervals contains the x-coordinate of the vertex of the graph of f ?

The complete graph of the function f is shown in the xy-plane above. Which of the following are equal to 1 ? I. f(-4) II. f((3)/(2)) III. f(3)

Some values of the function f are shown in the table above. Which of the following defines f ?

The complete graph of the function f is shown in the xy plane above. Which of the following is/are equal to -2? I.f(-1) II.f(0) III. f((7)/(2))

Graphs of the functions f and g are shown in the xy-plane above. For which of the following values of x does f(x) + g(x) =0 ?

Some values of the linear functions f are shown in the table above. Which of the following defines of f?

In the xy-plane, the graph of function f has x-intercepts at -3, -1, and 1. Which of the following could define f ?