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3 years ago

5x – 4y=8 -x + 2y = -4 1. 2. 44 - by = -6 4x – 4y = -8

Mathematics

1 answer:

ycow [4]3 years ago

8 0

-x + 2y = -4

-x = -2y - 4

x = 2y + 4

5(2y + 4) - 4y = 8

10y + 20 - 4y = 8

6y + 20 = 8

6y = -18

y = -3

-x + 2y = -4

-x + 2(-3) = -4

-x - 6 = -4

-x = 2

x = -2

The coordinate pair is (-2, -3) (x = -2, y = -3.)

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