Math Help - help with graphing

1. 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

2. 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
Hello,

how about using a table?
Code:
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