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anonymous

  • 5 years ago

7x is more then or equal to 49 solve then graph plz help!!!

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  1. anonymous
    • 5 years ago
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    \[7x\ \geq \ 49 \iff x\ \geq 7\]

  2. anonymous
    • 5 years ago
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    so the sign doesnt change?

  3. anonymous
    • 5 years ago
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    No; the sign only changes when you divide by a negative number, in which case it reverses.

  4. anonymous
    • 5 years ago
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    oh ok how bout when i plot it on a line i keep the circal open right??

  5. anonymous
    • 5 years ago
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    open circal and arrow going to the left ?

  6. anonymous
    • 5 years ago
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    Hmm... I don't think so. I haven't done this for a while, but I think if it is more than OR EQUAL TO i.e. it includes the number, you use a solid circle. And the numbers are x greater than 7, so the line should go to 8, 9 10 etc, in that direction.

  7. anonymous
    • 5 years ago
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    oh.. my mind is just going blank i cnt remember thats y im trying to double check

  8. anonymous
    • 5 years ago
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    can u teach me how to solve this problem?.... -7x is more then 1/15 it says use multiplication princple.

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spraguer (Moderator)
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