Question

Question #288c6

Answer 1

this is a polynominal, because it can be written in the form
`a_0+a_1y+a_2y^2+a_3y^3`, where `a_0=a_2=0` and `a_1=-9` and `a_3=5`. the `a_i`'s are called coefficients, so they should be constants.