Precalc 11 – Week 8

This week we learned the vertex form and how to use clues to figure out to graph it.

y = a(x – p)² + q

Each letter signifies a part on the graph,

 

A= The thickness of the parabola

P= the horizontal slide

Q= The vertical slide

 

If A is smaller then 1 then the parabola will be thicker, but the bigger the number the thiner it is. Keep in mind for P that if the number is positive inside the brackets it will be negative on the graph because it is a double negative.

Lets say that out equation is  y = (x – 2)² + 3:

Step one: We want to find the vertex which would be (2,3)

Step two: Figure out A and how we should graph it

Step 3: Since A=1 in this equation it will be up 1 over 1 then up 3 over 1, up 5 over 1 etc.

This will be your default pattern when A=1, if it is any other number you will adjust it by either dividing that pattern or multiplying by that pattern. ex// A= 3

Pattern would be 3,9,15 etc

 

*COMPUTER WOULD NOT LET ME INSERT PHOTOS*

will fix issue by next week