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____ [38]
3 years ago
11

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

Mathematics
1 answer:
KiRa [710]3 years ago
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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