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- hayharbrLv 71 month ago
The points would be (70,0) and (20, 45000).

Slope is change in y over change in x so

(45000 - 0) / (20 - 70)

= 45000 / (-50)

= -900

which represents how much water drains out every minute.

You could multiply 20 times 900 and add that to 45,000 to see how much water was there to start with.

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Wouldn't the initial amount be 45000 since that's technically the y-intercept?