Hey everyone! Today we started off class with this practice problem. Mr. B said it would be good to refer back to these problems to study, so I would make sure you have this in your notebook and understand how to solve it.

We were given: http://prec.alcul.us/?attachment_id=2367

And had to substitute it in the following function: http://prec.alcul.us/?attachment_id=2368

To solve that, we learned that you were to put the (5+h/h) and (5/h) in place of x in the function shown here: http://prec.alcul.us/?attachment_id=2369 | http://prec.alcul.us/?attachment_id=2371

The goal for today was “I can tell the difference between a function and a non-function” We are going to have a different goal everyday, so be sure that by the end of each one, you fully comprehend what’s going on.

A function is simply: A special relationship between two variables. But as I looked online, it gets more specific saying that,  it’s a relation between two sets in which one element of the second set is assigned to each element of the first set, as the expression y  = x ^2.  basically stating that, for every ‘y’ value, there has to be 2 ‘x’ values because when you square a number there is a positive and negative answer.

We also sorted through some graphs to see which we thought were functions, and which were not.

I’m sure tomorrow we’ll go into more depth about functions and whatnot, but this is what we have so far. Also, I’m sorry the pictures of the math type equations are links… It wouldnt let me copy and paste them here, or let me phost them as pictures on the blog, but I’m sure you all understood just fine.

-Katy

The scribe for tomorrow is Brittney.