exam Maths Puzzle Numerical Ability

Rewrite the equation 4x-6y=-30 as a function of x.

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exam Other Question

Find the roots of the quadratic equations using the quadratic formula. Express the roots, if they are not rational, in simplest radical form.

x2 - 4x - 2 = 0
I am needing to find the x coefficient of this y=9.5x-1250