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f(x)=x squared

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    given that f(x)=x squared sketch these graphs, each on a seprate diagram, and find an expression, giving Y in terms of X, for each function.

    a: y=f(x)-1
    b: y=f(x+1)
    c: y=f(2x)
    d: y=-3f(x)

    i no how to draw these graphs out but i do not get what it means by find the expression giving y in terms of x?

    can any one please explain this
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    y=f(x)-1
    f(x)=x^2
    y=x^2-1
    and etc
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    We know that f(x)=x^2. Then y=f(x+1) \Rightarrow y=(x+1)^2 etc.
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    In these relations you just put the x square instead of f(x) and you find the expression of y in terms of x.
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    (Original post by sahil112)
    given that f(x)=x squared sketch these graphs, each on a seprate diagram, and find an expression, giving Y in terms of X, for each function.

    a: y=f(x)-1
    b: y=f(x+1)
    c: y=f(2x)
    d: y=-3f(x)

    i no how to draw these graphs out but i do not get what it means by find the expression giving y in terms of x?

    can any one please explain this
    They want to know the equations of the 4 graphs that you have drawn.
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    (Original post by Maths Buster)
    They want to know the equations of the 4 graphs that you have drawn.
    havnt they already given it?
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    (Original post by sahil112)
    havnt they already given it?
    They want the equations to involve x, not f. And so your 1st equation would be y = x^2; your 2nd equation would be y = [x + 1]^2. And so on.
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    (Original post by Maths Buster)
    They want the equations to involve x, not f. And so your 1st equation would be y = x^2; your 2nd equation would be y = [x + 1]^2. And so on.
    ah ok thanks for your help

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Updated: October 5, 2008
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