Algebra
Simple Interest Formula
Interest = principle × rate × time
• I = prt
read as “I am pretty ”
Distance Formula
Distance = rate × time
• d = rt
remember as dirt
Linear Equations (Slope-Intercept Form)
Begin, Move: the use of m and b in y = mx + b
To graph such a line equation, begin at the value of b, then move according to the value (slope)
of m.
Multiplying Binomials
Multiply the terms of two binomials in this order.
For example (x- 2)(x + 1),
FOIL: First, Outside, Inside, Last.
Word-Problem Solving Strategy
S-T-A-R
Search the word problem.
Translate the words into an equation.
Answer the problem.
Review the solution.
Quadratic Formula
A song to remember the quadratic formula sung to the tune of "Pop Goes the Weasel"
x equals negative B
Plus or minus square root
of B squared minus four A C
All over two A.