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20 March, 05:43

Is (-4,2) a solution of 4x+5y≤-7

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  1. 20 March, 05:51
    0
    No

    Step-by-step explanation:

    Substitute - 4 for x and 2 for y in 4x+5y≤-7. Is the resulting inequality true or not?

    4 (-4) + 5 (2) ≤ - 7

    or

    -16 + 10 ≤ - 7, or

    -6 ≤ - 7, which is False. No, (-4, 2) is not a solution of 4x + 5y ≤ - 7.
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