exam Maths Puzzle Numerical Ability

Could someone please explain this problem: graph the line that passes through the point (3, -2) that has a slope of 4/3. Thanks

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exam Other Question

find all possible zeros in the equation.......x^3 - 27x -54 Rationalize the denominator. Assume that all expressions under radicals represent positive numbers:
(sqrt(r) - sqrt(s))/(sqrt(r)+sqrt(s))

Thank you so very much~