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22. Consider the family of functions y = x", where n is an in- teger. The graphs of y = x" are symmetric with respect to the y-axis if n is These graphs are symmetric with respect to the origin if n is The y-axis is a vertical asymptote for these graphs if n is 23. What is the natural domain of a polynomial? 24. Consider the family of functions y = x /", where n is a nonzero integer. Find the natural domain of these functions if n is (a) positive and even (b) positive and odd (c) negative and even (d) negative and odd.2. Line segments in an xy-plane form "letters" as depicted. LIMIT (a) If the y-axis is parallel to the letter I, which of the letters represent the graph of y = f(x) for some function f? (b) If the y-axis is perpendicular to the letter I, which of the letters represent the graph of y = f(x) for some function f