exam Maths Puzzle Numerical Ability

Is the relation {(3,2), (1,-2), (-2,2), (-5,8)} a function? I said "Yes", but now I am worndering because of the (-2,2)? does this make it not a function?

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8. (4 pts) Determine the truth value of the statement ~q arrow[~ r (Reversed) V (p V q)] when p is false, q is true, and r is true.
decompose into a partial fraction

5x+7/x^2+2x-3