Factoring 

• No fractions involved so get rid of them
• Form for factoring:
• (___ + ___) (___ -___)
• FOIL to undo factoring 

Thumb method:

• ex: y+4x=12
• to look for y cover x
• y +       =12
• y=12
• same when you're looking for x, just cover y

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

How to use box function

• 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.

Imaginary numbers

• 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