Y What is the slope of the line on the graph?
O 1
4
O 1/2
2
02
x
O 3
4
N
4
-4

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.