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29 September, 14:30

X+2y greater than or equal to 10

3x-4y greater than 12

What ordered pairs are solutions to the set of equations

16,9

10,2

8,1

2,6

4,-4

14,-1

-4,2

+5
Answers (1)
  1. 29 September, 15:10
    0
    16, 9

    10, 2

    Step-by-step explanation:

    Given the two equations:

    x + 2y ≥ 10

    3x - 4y > 12

    You need to multiply the first fraction by a factor of '2' in order to get the opposite coefficients of 'y' to eliminate that variable:

    2 (x + 2y ≥ 10)

    2x + 4y ≥ 20

    + 3x - 4y > 12

    5x > 32

    x > 6.4

    Solve for 'y':

    6.4 + 2y ≥ 10

    2y ≥ 3.6

    y ≥ 1.8

    The only set of ordered pairs that have x > 6.4 and y > 1.8 are:

    16, 9 and 10, 2
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