Question 765506
Graph the two equations to get


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0,-4x,-5x+2)

)}}}


Note: the first equation is in green and the second is in blue


You'll see the two intersect at the point (2,-8), so that is the solution to the system.