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13-11-2020
Mathematics

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9. What is the value to the solution for the system of equations y = -5X-9 and y = 2x + 5.

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sqdancefan sqdancefan

14-11-2020

9514 1404 393

Answer:

(x, y) = (-2, 1)

Step-by-step explanation:

Equate the two expressions for y.

-5x -9 = 2x +5

-14 = 7x . . . . . . . .add 5x-5

-2 = x . . . . . . . . . divide by 7

Then ...

y = 2(-2) +5 = 1

The solution is (x, y) = (-2, 1).

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