Algebra II Notes

Factoring

New mentality: take notes when you're supposed to and do what you're supposed to do.

STAT EDIT L1 is x and L2 is Y STAT CALC 4 ENTER for slope= 0 if 0/n

undefined line: vertical and looks like n/0

STAT EDIT 5 if you lose where you're @ w/0 calc. make this chart and use any #'s for x and graph yourself

slope= change of y/ change of x
y=1/x
RATIONAL LINES- do not touch the x It does touch the y somewhere
slope is the change of y over the change of x for LOG on the calc: MATH ALPHA A the LOG KEY doesn't let you change the base so it goes by the counting system
counting system based on: 10 because it changes

ZOOM ENTER move cursor left and down hit enter again and move the cursor. It should start making a box keep making this box and blowing it up bigger to see how close it is to the Y.
This is important to find the last absolute value in money, etc. THE LIMITS!
Keep parent functions take it to college.

i=imaginary unit
anything to the zero power is 1
i^1= i
i^2=-1
i^3=-i
i^4=1
by definition: ixi is -1 It keeps cycling as the numbers get higher.
for i^501 write as two numbers because it's not a multiple of 4 so you can't do it that simply
if there's not a perfect squre find common multiples

vertex form: y=a(x-h)^2+k
you are given the h and the k because they are the vertex.
any other point is the (x,y) that you plug into the equation
know your variables: a, h and k
parabola is negative/positive depending on if it's opening up or down. (down is negative, up is positive)
standard form: ax^2+bx+c=0
2nd calc 2 to find the zeros of the quadratic equation
get as close to the line as you can when finding the zeros

By yessyyyyy17