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# PHMS7_M7CH1

### 7th Grade Chapter 1 Vocab

algebra the brainch of mathematics that involves expressions with variables
algebraic expression a combination of variables, numbers, and at least one operation
arithmetic sequencesequence a sequence in which each term is found by adding the same number to the previous term
base in a power, the number used as a factor
coefficient the numerical factor of a term contains a variable
defining the variable choosing a variable to represent an unknown value in a problem and using it to write an expression or equation to solve the problem
domain the set of input values for a function
equation a mathematical sentence that contains an equals sign, =
equivalent expressions expressions that have the same value
evaluate to find the value of an expression
exponent in a power, the nember that tells how many times the base is used as a factor
factors two or more numbers that are multiplied together to form a product
function a relation in which each element of the input is paired with exactly one element of the output according to a specified rule
function rule the operation performed on the input of a function
numerical expression a combination of numbers and operations
order of operations the rules to follow when more than one operation is used in a numerical expression ** PEMDAS **** MD left to right ****AS left to right
perfect square nnumbers with square roots that are whole numbers
powers numbers expressed using exponents
radical sign the symbol used to indicate a nonnegative square root
range the difference between the greatest and least numbers in a data set
sequence a list of numbers in a certain order
solution a valuefor a the variable that makes an equation true
square a product of a number and itself
square root one of the two equal factors of a number
term each number in a sequence
variable a placeholder, usually a letter, used to represent an unspecified value in mathematical expressions or sentences
Created by: szimmerman