VanillaAngelic VanillaAngelic

28-07-2016
Mathematics

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For what value of k is the point (9, 8) a solution to the equation 9x - 5y = k?

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dasetka dasetka

28-07-2016

9x - 5y = k Substitute in the x- and y-values (x = 9 and y = 8)
9 (9) - 5(8) = k Multiply
81 - 40 = k Subtract
39 = k

When k = 39, (9, 8) will be a solution to the equation.

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