Each option below is a system of two equations in xxx and yyy. Exactly one of them has no solution at all.
Which one?
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