Question

Which of the following polynomials has a graph with odd symmetry?

a. 17x^15 + 11x^8

b. 18x^13 - 12x^5

c. 13x^6 - 7x^3

d. 15x^11 + 31

Answer 1

The graph of a polynomial consisting only of odd-degree terms will have odd symmetry. (Any non-zero constant is an even-degree term.) The only one that qualifies here is ...
  b. 18x^13 -12x^5