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aussy123

  • 3 years ago

Which of the following is a solution of y-x< -3? (6,2) (2,6) (2,1)

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  1. aussy123
    • 3 years ago
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    @ajprincess Can you help me?

  2. aussy123
    • 3 years ago
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    @phi Can you please help me ?

  3. phi
    • 3 years ago
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    one way, is replace the x and y with numbers and do the arithmetic test (6,2) which means x=6 and y=2 replace x with 6 and y with 2 in your relation: y-x < -3 ? 2 - 6 < -3 is this true? is 2-6 less than -3 ?

  4. aussy123
    • 3 years ago
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    no

  5. phi
    • 3 years ago
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    what is 2-6 ?

  6. aussy123
    • 3 years ago
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    wait yes

  7. aussy123
    • 3 years ago
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    -4 is less than negative three

  8. phi
    • 3 years ago
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    2-6 is -4 -4 is less than -3 (maybe that is confusing ?)

  9. aussy123
    • 3 years ago
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    yea a little, I see how to do it now, I thought they wanted me to solve this equation by adding lol thank you

  10. phi
    • 3 years ago
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    so the first choice is the answer. we could test the others, and find that they do not work. example: test (2,6) x is 2 and y is 6 y-x < -3 ? 6-2 < -3 ? 4 < -3 No way! this is not true

  11. phi
    • 3 years ago
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    you could use algebra to rewrite the equation to (for example) y-x < -3 y < x-3 (add +x to both sides) this is the same relation, written differently. *maybe* this is easier to test ? test (6,2) : x is 6, y is 2 2 < 6-3 2 < 3 yes this is true. it gives the correct answer, and we did not get negative numbers, so maybe it is less confusing.... but I would just use the original form and practice understanding negative numbers.

  12. aussy123
    • 3 years ago
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    cool, Thank you so much, this helped a lot.

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