I need to make a function using simultaneous equations that meet these requirements. It must go through the point of (3,0) and (6.25,10) and have x values of 9, -9 and -10 and the function cannot be a linear or quadratic.

I'm having trouble because there does not seem to be enough information given to work it out because the only points we know are (3,0) and (6.25,10).

Any help would be greatly appreciated.