Which equation , Which set of ordered pairs corresponds to the graph?

Algebra
Tutor: None Selected Time limit: 1 Day

A pump removes 1500 gal of water from a pool at a constant rate of 40 gal/min. Which equation models the amount of water y in the pool after t minutes?

a.y = 40t + 1500

b.y = 40t - 1500

c.y = -40t - 1500

d.y = -40t + 1500

https://tcan4424-oakcliff-ccl.gradpoint.com/Resour...

Which set of ordered pairs corresponds to the graph?

a.(1, –6), (2, –4), (2, –2), (4, –2), (6, 0)

b.(6, 0), (4, –2), (2, –2), (2, 4), (1, –6)

c.(1, –6), (2, 2), (2, –4), (4, -2), (6, 0)

d. (0, 6), (–2, 4), (–2, 2), (–4, 2), (–6, 1)

May 11th, 2015

For the first one: since you are starting with 1500 gallons of water, you have +1500  since you are removing water, the 40 is negative, so your answer is D. y = -40t + 1500


For the second one: the solution is A  

May 11th, 2015

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