what is the domain of f(x)=3-2x/9-4x

Question

the question ask what is the domain of the funcition when f(x)=3-2x divided by 9-4x

                                                                                               

Answer 1

Once again, a student has (probably) failed to parenthesize both numerator and denominator, individually, of a rational algebraic function.

 

Assuming that the denominator is (9-4x), set that to zero, to get the value of x that must be excluded (to prevent division by zero).