Question 42107
y = 0.3x is defined for all values of x.
So the domain is ({{{-infinity}}},{{{infinity}}}).


The inverse function (y expressed in terms of x) is x = {{{y/0.3}}} or {{{x = 10y/3}}}.
Here also, x is defined for all values of y.
Hence, the range is ({{{-infinity}}},{{{infinity}}}).


The graph is given below.


{{{graph(200,200,-10,10,-10,10,0.3*x)}}}