Question

At 6:00 A.M., there were 800,000 gallons of water remaining in a reservoir. After 8 hours of irrigation, there were 100,000 gallons of water remaining. Write a linear equation that describes the number of gallons of water remaining as a function of the time the field had been irrigated.

This was on my last math test. I got y = 87,500x; let y = time, and let x = [Something] (I forgot what I put)

Can anyone check if I got the correct answer? If not, then can you please explain!

Answer 1

@undeadknight26

Answer 2

i am not sure sorry my friend...

Answer 3

That's okay. =/ It's a tricky question, indeed.

Answer 4

8750 or 87500 ?

Answer 5

87,500. I got that number by doing: (800,000-100,000) / 8

Answer 6

nvm,
thats correct :)

Answer 7

I hope so! That question was worth 10 points!
Thanks!

Answer 8

oh, i meant that slope = 87500 was correct.
the equation surely depends on what you have taken for x and y

Answer 9

Oh. If I got the slope correct, then I should get partial credit.
Although, does the equation seems fine?

Answer 10

y should not be time
x should be time and y should be number of gallons of water

Answer 11

Oh. My bad. Typo!

Answer 12

remember slope = change in y/ change in x
so, numerator should be change in y, which is700000 u got

Answer 13

Thanks!

Answer 14

welcome ^_^

Answer 15

You sure are a life saver. ^_^

Answer 16

thanks :D