Notes
Class Warm up:
We expanded equations.
I. E: (a+3b)^2
(a+3b) (a+3b)
From here, use F.O.I.L to fully expand the formula
F=First.
(a)(a)=a^2
O=Outer
(a) (3b)=3ab
I=Inner
(3b) (a)=3ab
L=Last
(3b) (3b)=9b
a^2+3b+3b+9b
a^2+6b+9b
We discussed discovering the family of certain tables. The example given was quadradic because the second differences were the same. Once we knew that the table was quadradic, we were supposed to find a formula for the table. We knew that the table would follow a quadradic function. We plugged the x values in for a the y values in for be and c always remained 1. We did this for three inputs and thus were given a system of equations. We solved the system and got the formula.
Homework
Finish Brake! Revisited and do homework 9.
ANNOUNCEMENTS
Revisions for POW 7, one mile at a time, are due monday. Remember to include the revised work as well as an explanation of what you did wrong and what you did to fix it.
Next Scribe
Camila S
2 comments:
NOTES
Homework 9
New Set of Functions: Reciprocal Functions
y=k/x
k=constant
x and y are inversely proportional
Also: Direct Proportionality
y=kx
Don't Divide That!
If you multiply by zero, the result is always zero. Therfore, you cannot divide a number into groups of zero. Can I divide a pie into groups of zero?
Graphs Involving Division by Zero
The graph of an equation involving division by zero is called a hyperbola, and bends away from zero or the point the would make the equation divide by zero.
Return of the Shadow
Shadow depends on how far away the person is from the lamp post.
Use similar triangles.
Homework
Do HW 10 & 11 for Monday.
Next Scribe
Kaitlyn
Camilla, next time make your own separate post.
Mr. M
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