Another question...lol plz helppp! Giving brainlyest to first and correct answer! Lots of points to! Ty!

Rebar is concrete with steel bars added for increased strength. The heaviest steel type weighs 108 pounds for 9 linear feet and 192 pounds for 16 linear feet. What is the constant of variation?

7 pounds per linear foot
9 pounds per linear foot
12 pounds per linear foot
16 pounds per linear foot