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anonymous

  • one year ago

Use the graph of y = f(x) to graph the given function g. g(x) = -2f(x). Where f(x) is the solid function and g(x) is the dotted.

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  1. anonymous
    • one year ago
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  2. jim_thompson5910
    • one year ago
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    Which point can you see on the function f(x) ?

  3. anonymous
    • one year ago
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    -2?

  4. anonymous
    • one year ago
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    i think its C but im very unsure

  5. jim_thompson5910
    • one year ago
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    a point is an ordered pair like (1,2) the 1 means you go 1 unit to the right 2 means you go 2 units up

  6. anonymous
    • one year ago
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    I meant -2,-1

  7. jim_thompson5910
    • one year ago
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    I see (-1,1) on the graph of f(x). Do you agree?

  8. anonymous
    • one year ago
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    wow you are right

  9. anonymous
    • one year ago
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    so now how do I get to the solution?

  10. jim_thompson5910
    • one year ago
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    the notation -2f(x) means -2*f(x) the star * means multiply

  11. jim_thompson5910
    • one year ago
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    y is the same as f(x) so we know when (-1,1) the value of y is 1, meaning that f(x) = 1

  12. jim_thompson5910
    • one year ago
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    -2*f(x) = -2*1 = -2 x stays the same throughout. the point (-1,1) becomes (-1,-2)

  13. anonymous
    • one year ago
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    ohhhh now that makes alot more sense

  14. jim_thompson5910
    • one year ago
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    these steps will happen to EVERY point on f(x) to get g(x)

  15. anonymous
    • one year ago
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    im graphing it now and it looks like D would be my solution

  16. jim_thompson5910
    • one year ago
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    D is the correct answer

  17. anonymous
    • one year ago
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    You are a lifesaver,thank you so much for all your help!

  18. jim_thompson5910
    • one year ago
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    you're welcome

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