Here, the given equation is :-
y= 6x -4
then ,
at (0,-4) : y = 6x - 4
or, -4 = 6(0) -4
or -4 = -4. ( this is true )
so (0,-4) satisfies the given equation.
The same process is to be repeated for each and every points and if the LHS = RHS then the point satisfies the equation .