Which is a correct interpretation of the slope of the line in this graph? a) the volume of water in the tank is decreasing by 2.5l per hour b) the volume of water in the tank is decreasing by 2l per hour c) the volume of water in the tank is decreasing by 0.4l per hour d) the volume of water in the tank is decreasing by 0.2l per hour

Option C. the volume of water in the tank is decreasing by 0.4L per hour

Step-by-step explanation:

step 1

Find the slope

we know that

The formula to calculate the slope between two points is equal to

we have

Substitute the values

The slope is negative

so

is decreasing

That means------> the volume of water in the tank is decreasing by 0.4L per hour