3 years ago

For khan:) 2x + 5y > -6 - 4x + 3y = 2 Is (-1,7) a solution of the system?

1 answer:

3 0

Step-by-step explanation:

$let \: 2x + 5y > - 6 ... i \\ - 4x + 3y = 2 ...ii\\ let \: x = - 1 \\ y = 7\\ from \: i \: equation \\ 2x + 5y > - 6 \\ then \: keeping \: value \: of \: x \: and \: y \\ 2 \times - 1 + 5 \times 7 > - 6 \\ - 2 + 35 > - 6 \\ 33 > - 6 \\ from \: ii \: equation \\ - 4x + 3y = 2 \\ - 4 \times - 1 + 3 \times 7 = 2 \\ 4 + 21 = 25$

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