Question

Which is a rational function?
A. y=2^x
B. y=x^2-x+4
C. y=(x-3)/x^2
D. y=(x-5)/2

Answer 1

I'm thinking it's either B or D

Answer 2

Need help?

Answer 3

Rational Function: is a function that is the ratio of two polynomials, and it is called "Rational" because one is divided by the other, like a ratio.

Warning!
× the polynomial (in the denominator) you are dividing by cannot be zero...never ever ×


Also I think this would help you.
https://www.mathsisfun.com/algebra/rational-expression.html