Some equations have the form y=kx, where k is a number.
Which equation CANNOT be written in the form y=kx?
![Some equations have the form ykx where k is a number Which equation CANNOT be written in the form ykx class=](https://us-static.z-dn.net/files/d6e/6376f0ed7153ae99e41286ee594661cf.png)