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anonymous

  • one year ago

Pre-image point N(6, -3) was dilated to point N'(2, -1). What was the scale factor used? 1/2 1/3 3 2

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  1. anonymous
    • one year ago
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    @imqwerty

  2. anonymous
    • one year ago
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    @AG23

  3. anonymous
    • one year ago
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    When you're dealing with scale factors, you're multiply the the pre-image by a number to get the image. So, we get \((N'(2,-1)=N(6k,-3k)\) where k is the scale factor. Can you figure it out from here (aka solve for k)?

  4. anonymous
    • one year ago
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    uhh

  5. anonymous
    • one year ago
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    Ok, to make it a bit simpler, we need to solve for the value of k that would satisfy the equations \[2=6k\]AND\[-1=-3k\]Does that help?

  6. anonymous
    • one year ago
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    yeah

  7. anonymous
    • one year ago
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    @imqwerty @Calcmathlete alittle more help please

  8. anonymous
    • one year ago
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    1.3?

  9. anonymous
    • one year ago
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    Let's start with the first equation first. How do you solve 6k = 2?

  10. anonymous
    • one year ago
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    /3

  11. anonymous
    • one year ago
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    Well, you're trying to get k by itself. k is multiplied by 6, to get rid of it, you divide by 6. on both sides.\[\frac{6k}{6}=\frac26\]\[k=???\]

  12. anonymous
    • one year ago
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    1/3!

  13. anonymous
    • one year ago
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    ...

  14. thehumantorch10
    • one year ago
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    yes!!!!!!! you got it

  15. thehumantorch10
    • one year ago
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    good job i gave you a medal

  16. anonymous
    • one year ago
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    Yup! k=1/3. You want to make sure that you got the number right, so plug it back in to see if it is correct. When you do plug it in, you see that k works for both equations, and you found the scale factor. :)

  17. imqwerty
    • one year ago
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    we have pre image point =(6, -3) and we hav new point = (2,-1) scale factor is the number multiplied with the pre image point (6,-3) to get the new point (2,-1) lets take the scale factor as m so (6m,-3m)=(2,-1) so 6m=2 frm here we get m=1/3 and also -3m=-1 frm here we get m=1/3 so scale factor is 1/3

  18. anonymous
    • one year ago
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    <3

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