1 Plot the graph of y = f(x) for the following functions, and then sketch them on paper. On each sketch, mark the coordinates of the vertex and the points where the graph intercepts the axes, and state the domain and range of each function. a f(x) = 2x ^ 2 + 5x + 2 b f(x) = - x ^ 2 + 6x + 7 e f(x) = 3x ^ 2 - x - 4 d f(x) = - 5x ^ 2 - 4x + 12
