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Valentin [98]
3 years ago
6

Gloria has a lunch account in the school cafeteria. The balance, f(x), in her account can be represented by the function f(x) =

–1.50x + 40, where x is the number of meals purchased. Suppose –1.50 changed to –2.75. What does this mean in the context of the problem?
Mathematics
1 answer:
Snezhnost [94]3 years ago
7 0
F(x) = -1.50x + 40.....basically, this is saying that Gloria has  40 bucks in her lunch account and each meal costs her 1.50.

By changing the -1.50 to -2.75 means she is paying more for her meals...the cost of a meal went up from 1.50 to 2.75.
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Which equation describes a line with a slope of -8 and includes the point (-4, 7)?
timurjin [86]
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Deriving The Answer:

By using the point-slope form of the equation of a line, by knowing the gradient of that line and a point on that line, the equation of this line can be derived.

Now, the point-slope form exists as y - y₁ = m ( x - x₁)

since slope = -8 and the point on the line = (-4 , 7)

Then m = - 8
          x₁ = - 4
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                              ⇒ y - 7 = -8x - 32

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3 0
3 years ago
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