DAY 2: QUADRATIC FUNCTIONS

Graphing it looks like:


The general form of y=x² is y=ax²
The a (coefficient) in the equation can be any value.

The next question on the board was: y=2x²
Once again you need to make a table of values.



Graphing it looks like:


NOTE:
* When the coefficient "a" is greater than 1:
-parabola will stretch vertically
-can compress horizontally
- either way it will look narrower than x² graph

* Coefficient is greater than 0 but less than 1:
-parabola will stretch horizontally
-it is a wider graph than x²

Eg. y=1/2x²


* If the coefficient is negative, the graph opens downward:

Eg. y=-x²


* Whenever the coefficient is positive the graph opens to the right of the x-axis and the negative coefficient goes the opposite direction:

Eg. right: x=y² and left: x=-y²


This wraps up today's lesson on Quadratic Functions.
I hope this is helpful and don't forget to do your homework:
Exercise #2 questions: 2-5 AND Exercise #3 questions: 1-3

Next SCRIBE: Mr. Lawrence, I choose you! (poke ball prop) Have fun! =D

Farewell friends, see you in class!