exam Maths Puzzle Numerical Ability

What is the image of x^2+y^2=1 under the mapping rule (x,y)> (3x+2,3y-5)? I got [1/3(x-2)]^2+[1/3(y+5)]^2=1 ?????

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exam Other Question

Find the slope of the line passing through the points (4,0) and (4,5)

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Thank You Please help me :(

2(x-3)=-6

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