a) Find the constant of proportionality between dollars earned by pop singers and dollars brought in by the song.
k=
b) Write an equation relating dollars earned by the pop singers, y, to dollars brought in by the sales of the song, x.
![a Find the constant of proportionality between dollars earned by pop singers and dollars brought in by the song k b Write an equation relating dollars earned by class=](https://us-static.z-dn.net/files/dfa/6bbfae7041754a4df77be6d4379fa06d.png)