Answer: The system consists of parallel lines
Step-by-step explanation:
Given system of lines :
[tex]y=\dfrac13x-4[/tex]
[tex]3y-x=-7[/tex]
Substitute [tex]y=\dfrac13x-4[/tex] in [tex]3y-x=-7[/tex], we get
[tex]3(\dfrac13x-4)-x=-7\\\\\Rightarrow\ x-12-x=-7\\\\\Rightarrow\ -12=-7[/tex] , which is not true.
That means , system has no solution.
i.e. they are representing parallel lines. [Parallel lines do not intersect and hence they do not have solution.]