Solve the system of inequalities to decide if the point (-3,2) is part of the solution; y<=-4x-3, +8y>=7

Question

Solve the system of inequalities to decide if the point (-3,2) is part of the solution; y<=-4x-3, +8y>=7

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Thu Thảo 6 months 2021-07-30T00:13:11+00:00 1 Answers 2 views 0

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  1. MichaelMet
    0
    2021-07-30T00:14:58+00:00
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    Answer:

    (x,y) = (-3,2) is a solution

    Step-by-step explanation:

    Given

    y \le -4x + 3

    x + 8y \ge 7

    Required

    Determine if (x,y) = (-3,2) is a solution

    y \le -4x + 3 becomes

    2 \le -4 * -3 + 3

    2 \le 15 — this is true

    x + 8y \ge 7

    -3+ 8 * 2 \ge 7

    13 \ge 7 — this is also true

    Hence,

    (x,y) = (-3,2) is a solution

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )