Afish is swimming at a constant rate toward the ocean floor. the equation y=-7x-3 can be used to represent this situation, where y is the depth of the fish in meters below sea level and x is the number of seconds the fish has been swimming.

which statement best describes the depth of the fish, given this equation?

a} from starting position of 7 meters below sea level, the fish descending 3 meters per second
b} from starting position of 7 meters below sea level, the fish is ascending 3 meters per second
c} from starting position of 3 meters below sea level, the fish is descending 7 meters per second
d} from starting position of 3 meters below sea level, the fish is ascending 7 meters per second

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