exam Maths Puzzle Numerical Ability

what is the slope of the direct variation y=-2/3x?? how do you find it. what is the relationship between the constant of variation and the slope???

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exam Other Question

simplify:

x^2 - 2x - 2 / x

thank you Good evening ma'am or sir would you please help me in solving this radical eqution:
-> -(square root of)y - (square root of)y-5 = 1
Thank you very much!!!