I have this vector field equation, the first part of the question is to find the potential equation for it, I found it.

The second part of the question is to find the work of the field through this path.

My idea is to plug t in the r equation, because I'm not sure but I think (x,y,z)=(component of r), is that right? and that way I find the start point of the path and the end point, plug it into the potential equation and that's it, is that right?