exam Maths Puzzle Numerical Ability

A which of the following points is on the line y = 3x - 7? (3,3) (3,2) (3,1) (3,0) Describe where each of the other three points is in relationship to this line.

B find anoth

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exam Other Question

what is the simplified answer to (a^n-1*b^-2n)/ (a^n+1*b^2n-2). The directions say "assume that no denominator equals 0 and that m and n are integers greater than 1." I couldnt figure this one out (factoring)

y^4-14y^3+49y^2

THANKS