which graph represents the system of ine qualities​

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground

F(x)=5/6x+3 which of the following is true