When I tried to put -2Y ≥ 3X = 6 into the Slope~Intercept form, I divided everything by 2 & got an answer of -Y ≥ 3/2 = 3, my calculator said [ERROR]. How do I solve this?

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?