Which system of equations below has exactly one solution? O y=-S4-6 and y=-3x = 6 O y=-36-Gandys-x-3 O y=-32- and yer-6 O y=-3x-6 and >= B =

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.