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anonymous

  • one year ago

f(x)=x^2+3x-4

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  1. anonymous
    • one year ago
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    find the domain,range, axis of symetry, and vertex

  2. anonymous
    • one year ago
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    @Hero

  3. Hero
    • one year ago
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    @pooja195, help her

  4. anonymous
    • one year ago
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    :)

  5. pooja195
    • one year ago
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    Have you started this yet? If so what do you have so far? :)

  6. anonymous
    • one year ago
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    No, I tried to but it didn't really make sense. I graphed it though by plugging in points

  7. pooja195
    • one year ago
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    Thats fine Starting with all real numbers, the domain is the largest possible set of x values that has a meaningful y value. The largest possible set of x values is all the real numbers, since each real number has a meaningful output , there is no division by zero or square root of a negative number.

  8. anonymous
    • one year ago
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    okay so the domain would be all real numbers?

  9. pooja195
    • one year ago
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    yes :)

  10. pooja195
    • one year ago
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    Wanna try out range?

  11. anonymous
    • one year ago
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    sure

  12. pooja195
    • one year ago
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    For range there is no simple formula. You have to look at the graph and find the y values which are 'hit'

  13. anonymous
    • one year ago
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    y<=4?

  14. pooja195
    • one year ago
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    Look at this https://www.desmos.com/calculator/9zbczplemb

  15. pooja195
    • one year ago
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    Range would be the green line

  16. pooja195
    • one year ago
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    if you shine a flashlight horizontally , the range is the shadow

  17. anonymous
    • one year ago
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    so, y<-3/2??

  18. pooja195
    • one year ago
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    thats the axis of symmetry

  19. anonymous
    • one year ago
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    ok, so then what would the range be? Sorry, I dont understand this part

  20. pooja195
    • one year ago
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    The range would be y>= -25/4 because the range is the y values of the ordered pairs of your function

  21. anonymous
    • one year ago
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    oh okay! So now all we need is the vertex which is -1.5,-6.25?

  22. pooja195
    • one year ago
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    Thats correct good job :)

  23. anonymous
    • one year ago
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    Thanks for your help:))

  24. pooja195
    • one year ago
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    \(~~~~~~~~~~~~~~~~~~~~~~~~~~\Huge{\color{red}{\heartsuit}\color{orange}{\bigstar}\color{yellow}{\heartsuit}\color{green}{\bigstar}\color{blue}{\heartsuit}\color{purple}{\bigstar}\color{hotpink}{\heartsuit}}\)\(\Huge\bf\color{#FF0000}W\color{#FF4900}e\color{#FF9200}l\color{#FFDB00}c\color{#FFff00}o\color{#B6ff00}m\color{#6Dff00}e\color{#24ff00}~\color{#00ff00}t\color{#00ff49}o\color{#00ff92}~\color{#00ffDB}O\color{#00ffff}p\color{#00DBff}e\color{#0092ff}n\color{#0049ff}S\color{#0000ff}t\color{#2400ff}u\color{#6D00ff}d\color{#B600ff}y\color{#FF00ff}!\)\(~~~~~~~~~~~~~~~~~~~~~~~~~~\Huge{\color{red}{\heartsuit}\color{orange}{\bigstar}\color{yellow}{\heartsuit}\color{green}{\bigstar}\color{blue}{\heartsuit}\color{purple}{\bigstar}\color{hotpink}{\heartsuit}}\)\(\Large\bf\color{Lime}{Please,\ don't\ hesitate\ to\ ask\ questions!}\)\(\Large\bf\color{magenta}{We're\ here\ to\ help!}\Large\color{magenta}{\ddot\smile}\)

  25. anonymous
    • one year ago
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    Lol! Aww! That's so sweet<3!!!! Thanks:D

  26. pooja195
    • one year ago
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    :3 <3

  27. anonymous
    • one year ago
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    ty you too, hero:)

  28. pooja195
    • one year ago
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    @ChloeSiouz hold up theres a mistake

  29. anonymous
    • one year ago
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    Ok:)

  30. pooja195
    • one year ago
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    range is y>-4 it means you can't get value less than -4 by putting any value of x

  31. anonymous
    • one year ago
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    Alright, is the axis of symmetry still the same though?

  32. anonymous
    • one year ago
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    so, is everything else okay?

  33. pooja195
    • one year ago
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    It remains the same. Everything else looks fine.

  34. anonymous
    • one year ago
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    cool:)! Glad you caught that hhaaha:)

  35. pooja195
    • one year ago
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    :)

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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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