Does the following relationship represent a function x = y -1

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

Which representation has a constant of variation of -2.5

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14