It all depends what you want to do?
There is no question with the problem.
This is an equation with 2 variables. It defines a straight line graph.
It can be used to draw the graph.
you can draw up a table with x- and y- values
You can change from general form, to standard form, or
#y#-intercept gradient form.
can write down the gradient, x- and y- intercepts.
You can change any of the variables to the subject of the equation.
The only thing you cannot do is to solve it. There are infinitely many solutions which can be found.