this is as far as i got
(3y)/y-4=x
3y=xy-4x
find the inverse
((3x)/(x-4))=y
2 answers
Calculating the inverse of a function is easy.Just make x the subject of the equation, and replace y with x in the resulting expression
3y/(y-4)=x
3y=x(y-4)
3y=xy-4x
3y-xy= -4x
y(3-x)= -4x Divide with (3-x)
y= -4x/(3-x)= -4x/-(x-3)= 4x/(x-3)
4x/(x-3)
Is inverse function of 3x/(x-4)
3y/(y-4)=x
3y=x(y-4)
3y=xy-4x
3y-xy= -4x
y(3-x)= -4x Divide with (3-x)
y= -4x/(3-x)= -4x/-(x-3)= 4x/(x-3)
4x/(x-3)
Is inverse function of 3x/(x-4)