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hali12

Let f(x) = -4x +8. Write the rule for a new function as a vertical translation of f(x) three units down. Do not graph. If you just give me the anwser I'll give u a medel

  • one year ago
  • one year ago

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  1. Frank1991
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    f(x)=-4x+5

    • one year ago
  2. tyteen4a03
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    The translation of a vertical function is f(x) - c, where c is the unit of translation. In this case, the function would become f(x) = -4x+8 - 3.

    • one year ago
  3. Frank1991
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    But the -4 is the slope of the line and the 8 is the point where the line crosses the y-axis. Therefore, you only have to subtract 3 from the equation to obtain the new equation. and so the line is lowered by 3 units

    • one year ago
  4. tyteen4a03
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    @Frank1991 That is exactly what f(x) - c means...

    • one year ago
  5. hali12
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    ????

    • one year ago
  6. Frank1991
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    |dw:1349873197095:dw|

    • one year ago
  7. Frank1991
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    So b is the point where the equation crosses the y-axis. And if you change it by +1 the line just skips vertical up with 1.

    • one year ago
  8. Frank1991
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    In your case it has to skip down with 3 units, so just subtract 3 units from your b (which is 8) you can check it with google (just type the equation is the search bar)

    • one year ago
  9. hali12
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    idk?

    • one year ago
  10. estudier
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    http://www.wolframalpha.com/input/?i=plot+-4x%2B5%2C+-4x+%2B8%2C+for+y+in+0..10

    • one year ago
  11. hali12
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    you cant graph it.... is it 8?

    • one year ago
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