Answer:
the slope of the line is -10 and it represents the rate of which the liquid is leaking out of the container
Explanation:
find any 2 points on the line. i chose (10,800) and (20,700)
the formula for slope is m = y2-y1 divided by x2-x1
plug the numbers in, then solve and it should be
m = 800-700 / 10 - 20
m = 100 / -10
m = -10
hope this helps! :)