Thursday, March 5, 2009

Question 5: Extend the Learning....



The graph drawn shows a curve produced based on a quadratic equation.



With the curve in mind, how many answers do you think there will be for a pair of simultaneous equations where one is a quadratic equation and the other is a linear equation?








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7 comments:

  1. AnonymousMarch 6, 2009 at 12:08 AM

    Three? I am not sure.

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  2. AnonymousMarch 6, 2009 at 4:47 AM

    i don't know this one.

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  3. AnonymousMarch 6, 2009 at 9:13 PM

    I think there would be two answers as the curves goes up and then goes down. It would be impossible for a straight line to intersect only once with the curve.

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  4. AnonymousMarch 7, 2009 at 3:20 AM

    haha dunno.
    nvr do before XD

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  5. Mrs Taufiq-Kris NgMarch 9, 2009 at 5:30 AM

    There is a reason why the heading is 'extend your learning'- have not been taught but challenge yourself!

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  6. AnonymousMarch 12, 2009 at 10:39 PM

    A quadratic equation has two solutions whereas a linear equation has one solution. Therefore, I think there will be three solutions or answers.

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  7. AnonymousMarch 15, 2009 at 8:58 AM

    It depends. Considering the curve shown above:-
    There is only 1 solution if the linear equation is a tangent to the quadratic function or its gradient is undefined.
    Or else, it will have 2 solutions;assuming the linear equation does intersect(s) the quadratic function

    ReplyDelete

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