A quadratic function f is given. f( x ) = x2 - 4x (a) Express fin standard form. f ( x ) = x- - 4+ 0 X (b) Find the vertex and x- and y-intercepts of f. (If an answer does not exist, enter DNE.) vertex ( x, y ) = () X x-intercepts ( x , y ) = ( smaller x-value) ( x, y ) = (larger x-value) y-intercept ( x , y ) = (c) Sketch a graph of f. Graph Layers Clear A After you add an object to the graph you can use Graph Layers to view and edit its O properties. Fill . C - 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 2 3 4 5 6 7 8 9 10 No Solution