Acertain function fits the following description: as the value of x increases by 1 each time, the value of y decreases by the square x. is this function linear or non-linear? explain.

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons