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elixir [45]
3 years ago
15

1 Which of the following is an equation of the line containing points (0, -5) and (5, -3)?​

Mathematics
1 answer:
Alla [95]3 years ago
5 0

Answer:

y=8/5x-11

Step-by-step explanation:

first you find the gradient of the line:- y(of the first point)minus y(of the second point) divided by x(of the first point)minus x(of the second point)

<u>-</u><u>5</u><u>-</u><u>3</u>=<u>-8</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>0</u><u>-</u><u>5</u>=<u>-</u><u>5</u><u> </u><u> </u><u> </u><u> </u>gradient=8/5

<h3>finding equation </h3>

<u>8</u>=<u>y</u><u>-</u><u>3</u>

5=x-5 then cross multiply you will get :-

5(y-3)=8(x-5)

5y-15=8x-40

5y=8x-40+15

5y=8x-25

<u>5y</u>=<u>8x</u>-<u>25</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>5 5 5

y=<u>8x</u>-5

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u> 5

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

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<h3>Answer:</h3>

F (3x, 3y)

<h3>Explanation:</h3>

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<em>Comment on the problem</em>

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<h3><u>Question:</u><u>-</u></h3>

A coca cola costs 150 yen. You buyed 30 bottles of cola and sold them at the price of 155 yen each. Find profit %

<h3><u>Answer</u><u>:</u><u>-</u></h3>

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Cost price = ¥150

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