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anonymous

  • one year ago

Which are points on the graph of y = 1.5 + ⌈x⌉? Check all that apply. (–4.5, –2.5) (–1.5, 0) (–0.8, 0.5) (1.3, 3.5) (4.5, 6) (7.9, 9.5)

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  1. anonymous
    • one year ago
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    @marymiller @Hero @imqwerty

  2. triciaal
    • one year ago
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    rephrased what (x,y) set makes the equation true?

  3. triciaal
    • one year ago
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    |dw:1439681083551:dw|

  4. anonymous
    • one year ago
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    im lost

  5. triciaal
    • one year ago
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    |dw:1439681198748:dw|

  6. Vocaloid
    • one year ago
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    *just want to make note that ⌈x⌉ means round up x to the next greatest integer, so if x = 1.3 then ⌈x⌉ = 2

  7. Vocaloid
    • one year ago
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    what triciaal is getting at, is that you want to try each point and see if the equation y = 1.5 + ⌈x⌉ is still true

  8. Vocaloid
    • one year ago
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    so, our first point is (–4.5, –2.5), right? we let x = -4.5 and y = -2.5 now we plug them into the equation y = 1.5 + ⌈x⌉ x = -4.5, so ⌈x⌉ = -4 because -4 is the next greatest integer above -4.5 -2.5 = 1.5 + (-4) is true, so we know that (–4.5, –2.5) is on the line

  9. Vocaloid
    • one year ago
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    I did the first point, now try the other ones

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