[tex]\frac{x^{2}-9}{7x}[/tex] is a rational function.
A rational function is of the form: [tex]\frac{p\left(x\right)}{q\left(x\right)}[/tex].
Where both p(x) and q(x) are polynomials.
Only [tex]\frac{x^{2}-9}{7x}[/tex] is of the form of rational function.
Here, [tex]p(x)=x^{2}-9, q(x)=7x[/tex].
Learn more: https://brainly.com/question/19044037
