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anonymous

  • 5 years ago

What is the possible discriminant of the graph? a. –17 b. 0 c. 12 d. 49

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  1. anonymous
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    i dont know what discriminant means?

  3. anonymous
    • 5 years ago
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    thats ok if u dont know, thanks anyway

  4. anonymous
    • 5 years ago
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    i could answer the question for u if u tell me

  5. anonymous
    • 5 years ago
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    its basically, the answer to part of the quadratic equation which is b^2 - 4ac

  6. anonymous
    • 5 years ago
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    i c ok 1 sec

  7. anonymous
    • 5 years ago
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    i think its 0, b, b/c it only has one x intercept, am i right?

  8. anonymous
    • 5 years ago
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    ..

  9. anonymous
    • 5 years ago
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    well, if what you said for discriminate is correct then the answer I got is 36 b^2 - 4ac (-6) ^2 - 4 a(0) -6^2 = 36 -4a(0) = 0 but 36 is not one of the answers, did i do something wrong?

  10. anonymous
    • 5 years ago
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    the equation of the graph is \[y=(x+5)^2\] which is equivalent to y = x^2+10 x+25 hence a=1,b=10 and c=25. the discriminant is 10^2 -(4)(1)(25)=0

  11. anonymous
    • 5 years ago
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    Oh i see, I thought that the (B,C) above the point was supposed to be b and c to solve the equation but instead you find the actual equation and solve with that. Thanks, event though this wasn't my question.

  12. anonymous
    • 5 years ago
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    its a negative 5

  13. anonymous
    • 5 years ago
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    Really? wow okay, i'm stupid, bad resolution on my screen made it look like b and c not -5 and 0 sorry.

  14. anonymous
    • 5 years ago
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    its okay, so now what?

  15. anonymous
    • 5 years ago
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    umm.. read what Safiah said.

  16. anonymous
    • 5 years ago
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    i did but its not a Positive 5

  17. anonymous
    • 5 years ago
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    on the graph its a 5

  18. anonymous
    • 5 years ago
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    -5

  19. anonymous
    • 5 years ago
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    okay, then put in the negative, (x-5)^2 X^2-10x+25 a =1; b = -10; c = 25 b^2-4ac (-10)^2 - 4 (1)(25) 100 - 100 = 0 same answer (by the way, when graphing exponential equations, what ever number added to x inside those () will be moved to the left on the x-axis) what Safiah said was correct but even differently its the same answer

  20. anonymous
    • 5 years ago
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    so its 0, b?

  21. anonymous
    • 5 years ago
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    yea

  22. anonymous
    • 5 years ago
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    thank u, so i was right bye

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spraguer (Moderator)
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