Liz Z. answered 09/16/20
Full Time secondary math tutor. I love math, and you can too!
This is an odd function because it has symmetry about the origin. You can remember odd=origin. We cannot determine the actual leading coefficient without knowing more than one point on the graph, but it is positive. Think of the basic y=x3 function; it goes down on the left and up on the right. All functions with odd exponents on the leading variable behave like this. (So any x5, x3, x7, etc. function, including linear functions, with positive leading coefficients.) y= -x3 does the opposite: up on the left, down on the right.