Sequences and Financial Math
     Compound Interest:
          A = P(1 + i)ⁿ  or  A = P(1 + r/n)^nt
     GST rate = GST/price
     Tip rate = Tip/price   or   Tip rate = Tip/(GST + price)

     Arithmetic Sequence:
          t_n = a + (n - 1)d   S_n = n/2 [ 2a + (n - 1)d

     Geometric:
          t_n = ar^n-1   S_n = n/2 (a + t_n)

Functions Check: vertical line test

Rational Expressions/Equations Restrictions: Look for variables in denominators

Coordinate Geometry
     The distance between A(x₁, y₁) and B(x₂, y₂) is:

     The midpoint of the line segment joining A(x₁, y₁) and B(x₂, y₂) is

     The line slope joining A(x₁, y₁) and B(x₂, y₂) is

**Number Systems: real, rational, irrational, integers, whole, natural

Equations of Linear Relations (Lines)
      slope y-intercept: y = mx + b
      point-slope: y₂ - y₁ = m(x₂ - x₁)
      **standard form: ay + bx + c = 0
      **x-intercept: y = 0, y-intercept: x = 0
      Perpendicular lines: slopes are negative reciprocals (m₁ * m₂ = -1)
      Functions pass the vertical line test
      Line of Best Fit - Under construction

Multiplying Polynomials
Factoring Polynomials with and without Algebra Tiles

Trigonometry
   In any right triangle, : c² = a² + b²,    a² = c² - b²
   In any triangle, :

      c² = a² + b² - 2ab cosC  (2 sides/contained angle)    
        (3 sides)

SinA = opposite    CosineA = adjacent     TangentA = opposite             hypotenuse                 hypotenuse                     adjacent

Hint:  S o/h   C a/h   T o/a

Angle of Elevation = Angle of Depression: alternate angles are congruent

Angle Definitions (Standard Position)**

Right Triangle Definitions **

	Q1	Q2	Q3	Q4
sin= y/r	+/+ = +	+/+ = +	-/+ = -	-/+ = -
cos= x/r	+/+ = +	-/+ = -	-/+ = -	+/+ = +
tan= y/x	+/+ = +	-/+ = -	-/- = +	-/+ = -
Starting from Q4: C A S T	A	S	T	C