Wanted to see if anyone here was good with algerbra 2 and would be able to get on join.me and help me take assignments on it.

Currently going over:

-Reflections and Translations

-Stretches and Compressions

-Composition of Functions

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- Jun 13th 2012, 01:23 PMprogramx86Anyone Good With Algebra 2?Wanted to see if anyone here was good with algerbra 2 and would be able to get on join.me and help me take assignments on it.

Currently going over:

-Reflections and Translations

-Stretches and Compressions

-Composition of Functions

- Jul 10th 2012, 06:50 AMrobbiecee2Re: Anyone Good With Algebra 2?Quote:

-Reflections and Translations

$\displaystyle f(x)+a$ shifts the graph up a units for positive values of a, and shifts down for negative values of a.

$\displaystyle f(x+1)$ shifts the graph LEFT for positive values of a, and shifts RIGHT for negative values of a.

$\displaystyle -f(x)$ reflects graph in x-axis

$\displaystyle f(-x)$ reflects graph in y-axis

Quote:

-Stretches and Compressions

$\displaystyle kf(x)$ scales the graph vertically. i.e. stretches if k>1 and compresses if k<1

$\displaystyle f(kx)$ scales the graph horizontally. i.e compresses if k>1 and stretches if k<1

Quote:

-Composition of Functions

$\displaystyle f(x)=x^2 -1, g(x)=3x-4$

$\displaystyle f(g(x))$

$\displaystyle =f(3x-4)$

$\displaystyle =(3x-4)^2 +1$

$\displaystyle g(f(x))$

$\displaystyle =g(x^2 +1)$

$\displaystyle =3(x^2 +1)-4$

you can check out my videos for help, at robbiecee2 - YouTube