The equation y=19x relates proportional quantities x and y. what is the value of x when y is 4?

The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)1/n+c what does the graph tell you about the value of n in this function

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Issof claims that the scale factor is 1/2. which statement about his claim is correct