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zigzagoon2000

Which ordered pair is a solution of the inequality? y≥4x - 5 A. (3, 4) B. (2, 1) C. (3, 0) D. (1, 1) A, B, C, or D? Please explain (:

  • one year ago
  • one year ago

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  1. sauravshakya
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    Substitue all the points see in which u get the TRUE relation

    • one year ago
  2. Yahoo!
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    Yup...Do the Substitutions..)

    • one year ago
  3. mathslover
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    Try to put the values in the given inequality. For example : \(y\ge 4x-5\) \(\text{Put the ordered pair of (x,y) , let it be that of 1st option}\) In 1st option given, x=3 and y = 4 \(4\ge 4(3)-5\) \(4\ge 12-5\) \(4\ge 7\) what do you think is it true that 4 is greater or equal to 7

    • one year ago
  4. zigzagoon2000
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    Greater..

    • one year ago
  5. mathslover
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    @zigzagoon2000 : is 4 greater than 7 ?

    • one year ago
  6. mathslover
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    You have 4 stars : \(\star \star \star \star\) and your friend has 7 stars: \(\star \star \star \star \star \star \star \) Who has more?

    • one year ago
  7. mathslover
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    @zigzagoon2000 do reply.

    • one year ago
  8. zigzagoon2000
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    Your friend.

    • one year ago
  9. miteshchvm
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    i guess its D, substitute the values and find them

    • one year ago
  10. mathslover
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    Right. so finally 4 is greater or less then 7 ?

    • one year ago
  11. zigzagoon2000
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    Less.

    • one year ago
  12. mathslover
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    Good. so can you now substitute values of other options as I did and tell me which is the answer?

    • one year ago
  13. zigzagoon2000
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    I'm not sure how to do so, I mean I'm not very good at this type of math.. Is it D..?

    • one year ago
  14. mathslover
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    Yes , it is but that is what told by @miteshchvm already, OK, first of all just tell me what will be : \(y\ge 4x-5\) put y = 1 and x = 2 What do you get?

    • one year ago
  15. sauravshakya
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    Well, I am impressed by the may @mathslover is teaching

    • one year ago
  16. zigzagoon2000
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    Okay one question first. Um.. like I said, I'm not very good at this type of math and I did guess because I don't know how to do it. But the question is: when I replace x would that be 42 or 4*2 which would be 8..? And @sauravshakya I am too haha. Seems like an official teacher. @mathslover please have patience. (:

    • one year ago
  17. mathslover
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    Thanks @sauravshakya and no, @zigzagoon2000 I am not an official teacher :). OK, now coming to the point. @zigzagoon2000 always remember that whenever you are given : \(4x , 5y , 6a\) where 4,5,6 are constants and x,y,a are variables then it is : \(4x = 4\times x\) \(5y = 5\times y\) \(6a=6\times a\) Hence when you put x = 2 in 4x then you get : \(4x=4(2) = 4\times 2 = 8\) Refer writing that as 4(2) rather than 42 ... It avoids confusion.

    • one year ago
  18. zigzagoon2000
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    I see, thank you very much for the explanation.. One of the many that are needed in my case. So the answer to your original question would be: 1≥8 - 5, which would be 1≥3.

    • one year ago
  19. mathslover
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    Very good. You are correct . Similarly find for other values given in options and then you will arrive to a correct answer. Thanks!

    • one year ago
  20. zigzagoon2000
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    What does this symbol even mean "≥"? I know what > means but I don't know what it means with the line underneath.

    • one year ago
  21. mathslover
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    \(\ge \implies \text{Greater than or equal to}\) the line underneath the > represents --> equal to sign

    • one year ago
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