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7th Unit 2
One Variable Equations and Inequalities
Term | Definition |
---|---|
Adjacent angles | two non-overlapping angles that share a common vertex and exactly one ray |
Basic needs | minimum necessities |
Budget | a monthly or yearly spending and savings plan for an individual, family, business, or organization |
Coefficient | a number that is multiplied by a variable(s) |
Complementary angles | two angles whose degree measures have a sum of 90° |
Compound interest for an investment | interest that is calculated on the latest balance |
Congruent angles | angles whose angle measurements are equal |
Constant | a fixed value that does not appear with a variable(s) |
Coupon | an amount deducted from the total cost of an item |
Equation | a mathematical statement composed of algebraic and/or numeric expressions set equal to each other |
Family budget estimator | determines the monthly or annual base income that is needed for a family |
Inequality | a mathematical statement composed of algebraic and/or numeric expressions set apart by an inequality symbol |
Order of operations | the rules of which calculations are performed first when simplifying an expression |
Positive rational numbers | the set of counting numbers that can be expressed as a fraction |
Principal of an investment | the original amount invested |
Rebate | an amount returned or refunded for purchasing an item or items |
Sale | a reduced amount or price of an item |
Simple interest for an investment | interest paid on the original principal in an account |
Solution set | a set of all values of the variable(s) that satisfy the equation or inequality |
Straight angle | an angle with rays extending in opposite directions and whose degree measure is 180° |
Supplementary angles | two angles whose degree measures have a sum of 180° |
Variable | a letter or symbol that represents a number |
Vertical angles | a pair of non-adjacent, non-overlapping angles formed by two intersecting lines creating angles that are opposite and congruent to each other |
Wage | the amount usually earned per hour or over a given period of time |