| A | B |
|---|
| Mean | The average |
| Median | The middle number when the data is ranked |
| Mode | The data piece that occurs the most often |
| Range | High - Low |
| High standard deviation | Indicates that data is spread out |
| Complementary angles | Two angles whose sum is 90 |
| Supplementary angles | Two angles whose sum is 180 |
| f(x) + c | Shifts the graph UP |
| f(x) - c | Shifts the graph DOWN |
| f(x + c) | Shifts the graph to the LEFT |
| f(x - c) | Shifts the graph to the RIGHT |
| c*f(x) when c > 1 | Makes the graph STEEPER |
| c * f(x) when 0<x<1 | Makes the graph LESS STEEP |
| - f(x) | "Flips" the graph over the x-axis |
| Biased | Unfair |
| Good sample | Lots of people and lots of variety |
| When solving a linear inequality... | Switch the sign if you divide by a negative |
| Percent of increase | Change/original |
| Slope | (y2-y1)/(x2-x1) |
| Midpoint | ((x1 + x2)/2, (y1 + y2)/2) |
| Absolute value of -12 | 12 |
| (-5)^2 | 25 |
| Linear pattern | Adds or subtracts the same amount each time |
| Exponential pattern | Multipies or divides by the same amount each time |
| Quadratic pattern | There's a "pattern" in the "pattern" |
| If any vertical line hits the graph more than once... | then the graph is NOT a function |
| To graph y = 5x - 2, | Start at -2 on the y-axis |
| Absolute value graph | V-shaped |
| Quadratic graph | U-shaped |
| Exponential graph | Curved (rises or falls quickly) |
| Linear graph | Straight line |
| For 3 lengths to form a triangle, | the two short lengths must beat the long length. |
| For 3 lengths to form a right triangle, | then a^2 + b^2 must equal c^2. |
| Area of a rectangle | A= b*h |
| Area of a triangle | A = 1/2 b*h |
| Surface area of a pyramid | SA = 4(1/2*b*l) + B |
| Sin A | opp/hyp |
| Cos A | adj/hyp |
| Tan A | opp/adj |
| Parallel lines | Lines in the same plane that do not intersect |
| Perpendicular lines | Lines that form a right angle |
| Skew lines | Lines that are NOT in the same plane |
| Isosceles triangle | A triangle with two congruent sides |
| Sum of the interior angles in a polygon | S = (n-2)*180 |
| Same shape and same size | Congruent |
| Same shape but different size | Similar |
