| A | B |
|---|
| rate | a comparison to two quantities with different units |
| ratio | a comparison of two quantities using division |
| unit rate (definition) | a comparision of two quantities where the denominator is one |
| scaling up | multiplying the numerator and denominator by the same number |
| scaling down | dividing the numerator and denominator by the same number |
| means/extremes method | a method for solving proportions where you multiply the mean and extremes and then divide the products |
| percent increase (definition) | amount increase divided by original amount |
| percent decrease (definition) | amount decrease divided by the original amount |
| percent equation | multiplying the unit rate (k) in decimal form by the original amount to get a new amount |
| simple interest | the product of the principal, rate and time |
| constant of proportionality | a synonym for unit rate, makes a relationship proportional |
| constant of proportionality (definition) | y = kx or k= y/x |
| unit rate | synonym for constant of proportionality |
| proportion | when two or more ratios are equal to each other |
| percent increase | examples include tax, tip, markups, interest |
| percent decrease | examples include discount and depreciation |
| direct variation | when two values vary so that when one increase or decrease the other increases or decreases by the same constant value |
| direct variation | the graph begins at the origin and forms a straight line. |
| continuous data (definition) | data that CAN include fractions and decimals |
| discrete data (definition) | data that can only be expressed in whole numbers |
| continuous data | connect the dots |
| discrete data | do not connect the dots |
