The Point
 Slope form of the line which has a slope of m and which passes through the point (x_{1}, y_{1}) is: 

Probability Formulas 

Conditional Probability  P(AB) = the probability that A occurs given
that B has occurred 
OR = + (For Disjoint , or Mutually Exclusive events)  P(A or B) = P(A) + P(B) 
AND = * (For Independent events)  P(A and B) = P(A) * P(B) 
Union and Intersection  The addition rule and multiplication rule often are expressed
with symbols: — Intersection. This symbol represents two events that occur at the same time: A and B. (9 in diagram above) — Union. This symbol means that for two events, one or the other or both occur: A or B. (7, 9, 12 in the diagram above) Using these symbols, the addition rule and multiplication rule can be written as: P(A or B) = P(A U B) = P(A) + P(B) P(A and B) = P(A B) = P(A) * P(B) 
More Generally, If the events A and B are not Mutually Exclusive, ie there is "overlap":  P(A or B) = P(A) + P(B)  P(A and B) 
If A and B are NOT Independent Events:  P(A and B) = P(A) * P(BA) 
P(A and B) = P(B) * P(AB) 
Ex  
Compound Interest Formula  
e=2.718281828 is an approximation since e is an irrational number. 