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    If there’s a quadratic to complete the square and then there’s the same but doubled how do you find the value of x for the second one using the 1st example below
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    May 2008
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    (Original post by Reece.W.J)
    May 2008
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    transformations
    idk if x is double or half I forget
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    (Original post by angrypoliceman)
    transformations
    idk if x is double or half I forget
    I’ve not heard of transformations obvious guess would be double but idk as well
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    x is the same but y doubles:look at the second eqn as 2(x+3)^2 - 26 (once the square is completed)
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    Think it's (-a,b) is the vertex where you get A and b from completing the square then and as  y=2f(x) then the vertex is (-a,2b)
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    (Original post by angrypoliceman)
    transformations
    idk if x is double or half I forget
    Do you know what happens when signs are switched?
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    (Original post by Reece.W.J)
    Do you know what happens when signs are switched?
    It depends if it is - the function or if it is -x
    -x reflects the graph in the y axis
    -f(x) reflects the graph in the x axis.
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    (Original post by M4cc4n4)
    It depends if it is - the function or if it is -x
    

-x reflects the graph in the y axis 

-f(x) reflects the graph in  the x axis.
    X^2-5x+8 turns into -x^2+5x-8 how does this change the greatest value
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    (Original post by Reece.W.J)
    X^2-5x+8 turns into -x^2+5x-8 how does this change the greatest value
    The X value of the minimum point becomes the x value of the maximum point.
 
 
 
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