Functional Algebra Vocab & Terms Anything in orange should be copied into your notes! (Date in upper right hand corner!!!!)

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Presentation transcript:

Functional Algebra Vocab & Terms Anything in orange should be copied into your notes! (Date in upper right hand corner!!!!)

What is a variable? A variable is a symbol, usually a letter, that represents one or more numbers. We usually use x This means, when we see “x” it is representing a number that we do not know yet.

What is an Algebraic Expression? An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. Operation symbols are…??

Multiplication in Algebra Shown by parenthesis ( ) A dot  Making numbers and variables touch Examples using “7 times a number, x”

What are the operations of these phrases? Sum, more than, increased by _________ Difference, less than, decreased by _________ Product of __________ Quotient of __________

A few examples… Five more than a number A number decreased by 8 The product of seven and x The quotient of x and 8

Parenthesis mean… Parenthesis come first. Then outside the parenthesis. Have you heard of the Order of Operations? (PEMDAS) 2(x + 5) A. twice a number B. one-half of a number C. twice the sum of a number and 5 D. two more than a number

Five less than two times a number A. 5 – 2x B. 5(x + 2) C. X – 2 D. 2x - 5

What are some words related to addition? Plus Sum Increased by More than total

What are some words related to subtraction? Difference Subtracted from Decreased by

What are some words related to multiplication? Twice Double Of

What are some words related to division? Half Separated into Over

What are other terms for equals? Is Results in Is the same as Equivalent to

Coefficient A number used to multiply a variable What is the coefficient in the following… 4x 79x 34x-2 2(3x + 4)

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