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10 September, 10:32

Solve the inequality - 7x >21. What is the graph of the solution

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  1. 10 September, 11:36
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    -3 > x

    Explanation:

    -7x > 21

    ___ ___

    -7 - 7

    x < - 3

    Now, whenever we divide or multiply by a negative, we reverse the inequality symbol.

    In order to graph this, you do what I call the zero-interval test, which in this case, we plug in 0 for x, and determining whether the statement is false or true, determines which side we shade:

    0 < - 3 [Since this is a false statement, instead of shading to the right, we shade to the left.]

    I am joyous to assist you anytime.
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