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xxMikexx [17]
2 years ago
10

Write an equation of the line that passes through (2,-4) and (0,4)

Mathematics
1 answer:
LenKa [72]2 years ago
7 0

Answer:

step 1. y - y1 = m(x - x1). this is the equation given a point and a slope.

step 2. find the slope m. m = (y2 - y1)/(x2 - x1) = (4 - (-4))/(0 - 2) = 8/-2 = -4.

step 3. y - (-4) = -4(x - 2) ; y + 4 = -4x + 8.

step 4. y = -4x + 4.

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original price of first typewriter = x  

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x = 2970 x 100/110 = 2700  

Price of first typewriter = Rs 2700  

Original price of second typewriter = y  

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y = 2970 x 100/90  

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profit from first typewriter = 2970 - 2700 = 270  

Loss from second typewriter =  3300 - 2970= 330  

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so he lost 330 - 270 = Rs 60 in whole transaction

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