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zalisa [80]
3 years ago
7

I need help on this I am just going to use the picture

Mathematics
2 answers:
iren [92.7K]3 years ago
8 0

D is the correct answer

Radda [10]3 years ago
4 0

Answer:

D

Step-by-step explanation:

let y = f(x), that is

y = \frac{2x-3}{5}

Rearrange making x the subject

Multiply both sides by 5

5y = 2x - 3 ( add 3 to both sides )

5y + 3 = 2x (divide both sides by 2 ) , then

x = \frac{5y+3}{2}

Change y back into term of x, hence

f^{-1}(x) = \frac{5x+3}{2} → D

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The points A-1,-9) and K(5,1) are endpoints of a diameter of circle 5. Which equation represents circle S?
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Answer:

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Step-by-step explanation:

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reqd. eq. is (x+1)(x-5)+(y+9)(y-1)=0

x^{2} +x-5x-5+y^2+9y-y-9=0\\x^{2} -4x+y^2+8y-14=0\\compare with x^2+y^2+2gx+2fy+c=0\\center (-g,-f) \\radius r=\sqrt{g^2+f^2-c}

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4 0
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