# SAT Math Problem (2)

Composite Functions

A composite function is really just one equation plugged into another equation. Simple concept I can simplify even further! Take this simple example, then my SAT example.

Here, all it is asking you to do is pulg in -3 into all of the x's in the equation. You have to remember that all you are dealing with is x and y values. You are given an x to find the y that corresponds to it.

So, we really just found a point on a graph (-3,1).

SAT PREP QUESTION

What confuses people is the notation! All it means is plug the f equation into the g equation then plug in 2 into x... Like this:

Therefore, the answer they seek is -3!

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jeezzle (70)7 years agoThe fact that you created a math based signature just for this post is pretty cool.

hansenator (57)7 years ago (edited)Thank you! I also put together the first picture from Google. I didn't want the first picture to be an equation. Lol.