avitalkg avitalkg

17-06-2016
Mathematics

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what is the solution of the system? Use the graph. y=x+5 y=-5x-1

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jhonyy9 jhonyy9

20-06-2016

y = x + 5
y = -5x -1

so than you make y = y so x + 5 = -5x -1 result 6x = -6 so x = -6/6 so x = -1
and than you check it

y = - 1 +5 = 4
and
y = - 5 *(-1) -1 = 5 -1 = 4

so this mean that - 1 is the solution of the system sure

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