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Algebra-Unit 1
Unit 1 Vocab
Term | Definition |
---|---|
proportion | an equation that states that two ratios are equal |
cross products | the product of numbers on the diagonal when comparing two ratios |
ratio | a comparison of two quantities by division |
rate | a ratio that compares two quantities measured in different units |
unit rate | a rate in which the second quantity in the comparison is one |
conversion factor | a fraction whose numerator and denominator represent the same quantity but use different rates; the fraction is equal to 1 because the numerator and denominator are equal |
unit analysis | a method of changing one unit of measure to another |
literal equation | an equation where variables represent known values |
formula | a rule showing relationships among quantities |
equivalent equations | equations having exactly the same solution |
inverse operations | operations that undo each other |
simplify | to write a fraction or expression in simplest form |
algebraic expression | an expression that contains at least one variable |
like terms | two or more terms that have the same variable raised to the same power |
evaluate | to find the value of a numerical or algebraic expression |
real numbers | a rational or irrational number |
rational number | any number that can be expressed as a ratio of two integers |
irrational number | a number that cannot be expressed as a ratio of two integers or as a repeating or terminating decimal. |
square root | a number that is multiplied by itself to form a product |
perfect square | a number that has integers as its square roots |