Question 798190
Graphing the system gives you this


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0,3x-8,x-8)

)}}}


The green line is y=3x-8, the blue line is y=x-8. 


The two lines intersect at the point (0,-8), so that is the solution to the system of equations.