Solve the system using substitution. show all work. (3 points)
y=-2x+6
3y-x+3=0

Y = -2x + 6so we sub in -2x + 6 for y in the other equation

3y - x + 3 = 0
3(-2x + 6) - x + 3 = 0
-6x + 18 - x + 3 = 0
-7x + 21 = 0
-7x = -21
x = -21/-7
x = 3

now we sub 3 in for x in either of the original equations to find y.
y = -2x + 6
y = -2(3) + 6
y = -6 + 6
y = 0

so ur solution is : (3,0)

The answer would be the second choice : )