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17-12-2017
Mathematics

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If the point (3, k) is on the graph of the equation x+2y=15, what is the value of k?

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17-12-2017

2y = -x + 15
y = -1/2x + 7.5
For every x value we go right the y value goes down 1/2. so if we go 3 spots right we go down 1.5y from 7.5. So k = 6

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