A fish is swimming at a constant rate towards 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 the sea level and
x
is the number of seconds the fish has been swimming. Which statement best describes the depth of the fish, given the situation?

A fish 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?
From a starting position of 7 meters below sea level, the fish is descending 3 meters per second.
B From a starting position of 7 meters below sea level, the fish is ascending 3 meters per second.
C From a starting position of 3 meters below sea level, the fish is descending 7 meters per second