Riddle, If u have me, you want to share me. If u share me, You haven't got me. What am i?

Convert 16 yards to feet use the conversion rate 3 feet = 1 yard

At which value in the domain does f(x) =0?

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)