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Juli2301 [7.4K]
3 years ago
9

Write the equation of a line with the slope of -3 and through the point (2,-2).

Mathematics
1 answer:
GarryVolchara [31]3 years ago
8 0

Answer:

  y +2 = -3(x -2)

Step-by-step explanation:

The point-slope form of the equation of a line is useful for this:

  y -k = m(x -h)   . . .    for a line of slope m through point (h, k)

__

  y +2 = -3(x -2) . . . . fill in the given values. Note that -(-2) = +2

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Answer:

C, both methods save the same amount of money

Step-by-step explanation:

First, we need to calculate what each answer choice will equal.

For A, it asks us to add the sales tax and then take the discount off. So, to find out what the sales tax is equal to, we multiply 720 x 0.06 (because 6% is equal to 0.06).

720 x 0.06 = 43.2

Add the sales tax to the original amount and you get 763.2.

Now we take the discount, which is 25% or 1/4.

1/4 of 763.2 is 190.8.

Subtract the discount from the price and you get 572.4.

For B, it says to take the discount first and then add the sales tax.

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Subtract 180 from 720, and you get 540.

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Step-by-step explanation:

Step-by-step explanation:

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