Use the graph of f(x) to explain the relationship between the real zeros of f(x) and its intercept(s).
(1) f(x) has one real zero at -2 because the graph of the
function has an intercept at (0, -2).
(2) f(x) has two real zeros at -4 and -2 because the
graph of the function has intercepts at (40) and (0,
-2).
(3) f(x) has no real zeros because the graph of the
function does not pass through (0,0).
(4) f(x) has one real zero at -4 because the graph of the
function has an intercept at (-4, 0).
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