Question

for questions 1 - 2, what are the excluded functions of the function?
1.) y= 4/9x-45
2.) y= 7/2x+48

Answer 1

1.) Function of x.$f (x) = \frac{4x}{9} -45$
     Function of y.$f (y) = \frac{405}{4} + \frac{9y}{4}$
2.)Function of y.$f (y)= \frac{7}{2(y-48)}$
    Function of x.$f (x) = \frac{7}{2x} + 48$