exam Maths Puzzle Numerical Ability

I am lost. can you help me.

Rewrite the equation 2x - 9y = -72 as a function of x

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exam Other Question

How do you do these Quadrilateral WXYZ has vertices W(3,3), X(-4,2), Y(-3,-4), and Z(4,-3)

a) Vertify that quadrilaterl WXYZ is a parallelogram
b) Vetify that the diagonals of the parallelogram bi