Chapter 2 Vocab Flashcards
Solution of an equation
Value of the variable makes the equation true
Equation
Two expression are equal
Identity
Equation is true for all values of the variable
Contradiction
Equation is not true for any value of the variable
Formal
Equation that states a rule for a relationship among quanties
Literal equation
Equation with two or more variables
Ratio
A comparison of two quantities by division
Proportion
A statement that two ratios are equivalent
Rate
A ratio of two quantities with different units
Unit rate
A rate with a second quantity of 1 unit
Conversion factor
Two quantities are equal but use different units
Scale
A ratio between two sets of measurement
Similar
Same shape but not the same size
Corresponding sides/angles
Who figures in the same relative position
Percent
A ratio that compares the numbers 100
Commission
Money paid to a person for making a sale
Interest
Amount of money charged for borrowing money
Principal
Amount of borrowed or invested
Tip
Amount of money added to a bill for service
Sales tax
A percent of an item cost
Percent change
Increase or decrease
Discount
Markup
Reduced
Increased
