Each option below is a system of two equations in xxx and yyy. Exactly one of them has no solution at all.
Which one?
Once you get it right, the reasoning behind the answer shows up here.
Select all that apply.
3x−6y=93x - 6y = 93x−6y=9 and −x+3y=−4-x + 3y = -4−x+3y=−4
2x+5y=72x + 5y = 72x+5y=7 and 6x+15y=216x + 15y = 216x+15y=21
4x+2y=104x + 2y = 104x+2y=10 and 6x+3y=126x + 3y = 126x+3y=12
x−4y=2x - 4y = 2x−4y=2 and −2x+8y=−4-2x + 8y = -4−2x+8y=−4