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crissy126

  • 3 years ago

anyone know the vertex formula?

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  1. precal
    • 3 years ago
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    |dw:1359309883413:dw|

  2. precal
    • 3 years ago
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    |dw:1359309894668:dw|

  3. crissy126
    • 3 years ago
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    i can do the first part how do you do the second part?

  4. precal
    • 3 years ago
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    once you find x, just sub x back into the original equation to find y

  5. crissy126
    • 3 years ago
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    ok how would you if x=20 sub it into y= -0.0375x^ + 1.5x to =15

  6. precal
    • 3 years ago
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    give me the original equation first

  7. crissy126
    • 3 years ago
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    ok it is y=-0.0375x^2+1.5x

  8. precal
    • 3 years ago
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    |dw:1359310208655:dw|ok your x is correct

  9. precal
    • 3 years ago
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    |dw:1359310292570:dw|(20,15) is your vertex

  10. precal
    • 3 years ago
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    you will use order of operation to evaluate it to become 15

  11. crissy126
    • 3 years ago
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    do you only add the 20 to the 2nd x?

  12. precal
    • 3 years ago
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    -.0375(400)+30 -15+30 15

  13. precal
    • 3 years ago
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    use order of operations Parenthesis Exponents Multiplication and division left to right addition and subtraction left to right

  14. crissy126
    • 3 years ago
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    ok thanks

  15. precal
    • 3 years ago
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    yw

  16. crissy126
    • 3 years ago
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    im doing a math project and i didnt get how to do a part and you helped me thx

  17. precal
    • 3 years ago
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    anytime

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