help with graphing

how do you graph this?


y = -2 log base 2 x + 1

I know the negative would make the graph reflect and +1 would move it up one, but I am having some trouble with graphing this equation by plotting it.

Would you convert log base 2, into 2^x and then it would be -2(2^x) x + 1

Quote:

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Originally Posted by finalfantasy

how do you graph this?


y = -2 log base 2 x + 1

I know the negative would make the graph reflect and +1 would move it up one, but I am having some trouble with graphing this equation by plotting it.

Would you convert log base 2, into 2^x and then it would be -2(2^x) x + 1

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Hello,

how about using a table?

Code:

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x      log(2)x    *(-2)      +1
------------------------------
1/4    -2            4      5
1/2    -1            2      3
1      0            0      1
2      1            -2      -1 
4      2            -4      -3
8      3            -6      -5

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