(1 point) Enter left, right, upward, downward, stretching or shrinking. (a) The graph of f(x) = (x + 50) can be obtained from shifting the graph of f (x) = x to the (b) The graph of f(x) = x + 50 can be obtained from shifting the graph of f(x) = x (c) The graph of f(x) = 50x can be obtained by (d) The graph of f(x)=50x can be obtained by the graph of f(x) 50 units. 50 units. = x vertically by a factor 50. the graph of f(x)= horizontally by a factor 0.