Algebra Voc 1-3
Terms
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- real numbers
- rational numbers and irrational numbers
- similar figures
- have the same shape but not necessarily the same size
- rational numbers
- any number that you can write in the form a/b
- cross products
- the proportion a/b = c/d
- unit analysis
- conversion factor will produce the appropriate unit
- scale factor
- dimensions of the new image to the dimensions of the original figure
- irrational numbers
- can not be expressed in the form a/b - non-repeating, never ending
- scale
- corresponding actual distance
- dilation
- transformation in which a figure and its image are similar
- coefficient
- numerical factor of a term
- term
- a #, a variable, or the product of a # and one or more variables
- matrix
- is a rectangular arrangement of #'s in rows & columns
- like terms
- have exactly the same variables & exponents
- reciprocal
- given a nonzero rational # a/b, it would be b/a.
- simplify
- to replace an expression with its simplest form
- exponent
- tells how many times a number
- whole numbers
- counting numbers + zero
- algebraic expression
- 1/3x + 7/8 is an example of a mathematical phrase that can include numbers, variables, and operation symbols
- integers
- whole numbers and their opposites
- variable
- a symbol - usually a letter that represents one or more numbers
- equation
- 15 + 3x = 21 is an example of what type of mathematical sentence
- inequality
- 32 > -100 is an example of what type of mathematical sentence
- one
- the product of a nonzero number and its multiplicative inverse
- constant
- term that has no variable
- counterexample
- an example that proves a statement is false
- identity
- equation that is true for every value
- open sentence
- equation that contains one or more variables
- proportion
- equation that states that two ratios are equal
- multiplicative inverse
- reciprocal
- consecutive integers
- integers 50 and 51 are consecutive integers & so are -10, -9, -8
- absolute value
- the distance a # is from 0 on a number line
- opposites
- a # that is the same distances from zero on a number line . Ex. -7 & 7
- power
- has two parts - a base and an exponent. In the form a^n
- additive inverse
- the opposite of a number
- uniform motion
- object that moves at a constant rate is said
- scale drawing
- enlarged or reduced drawing that is similar to an actual object
- natural numbers
- counting numbers
- base
- used as a factor
- evaluate
- to substitute a given number for each variable, and then simplify
- element
- each # in a matrix