Question

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?

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

PLEASE HELP!!!

Answer 1

C

Explanation:

y = -7x - 3 is a linear function that follow y = mx+b. M is the slope or rate. Here m = -7 so the fish descends 7 meters per second. B is the y-intercept or starting position. Here the starting position is -3 so the fish starts 3 feet below sea level.