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# Algebra 1 Vocabulary

### Mid-Term Exam Study Guide

WordDefinition
Real number rational and irrational number
Irrational numbers non repeating decimals
Rational numbers a/b but b cannot be 0
Integers -3, -2, -1, 0, 1, 2, 3
Whole number 0, 1, 2, 3
Function Relationship between input and output
Communicative Property 3 + 2 = 2 + 3 or 2x3 + 3x2
Associative Property 2 + (4 + 6) = (2 + 4) + 6
Simplified Combine like terms
Distributive Property 4(a+ 6) = 4a + 24
Variable Unknown
Expression Does not have an equal sign
evaluate Solve
Twice Two time
Equation Has an equal sign
squared To the second power
cubed To the third power
Difference Subtraction
Product Multiply
quotient Division
Relation Set of ordered pairs
Linear equation Forms a straight line
Slope intercept form Y=mx + b
Standard formula of a line Ax + b = c
Ordered pair (x,y)
X axis Horizontal axis
Y axis Vertical axis
Domain X axis
Range Y axis
Slope Determine steepness (Rise over run) “m”
And Intersection
Or Union
Simplified Combine like terms
proportion Ratios that are equal
Constant Always the same
exponent Power
denominator Number on bottom (number doing the dividing)
factors Two numbers being multiplied
of Multiply
evaluate Find its value, solve or work out
Cross cancel Multiplication only – turn over fraction
solution One or more answers that give a true statement.
Replacement set Set if numbers chosen from the replacement set that make the equation true.
Solution set The set of numbers chosen from the replacement set that make the equation true
Additive identity Identical addition turned around ( 2 + 0 = 2)
Multiplication identity Multiply a variable or number by 1 (A x 1 = a)
Mult Property of Zero Anything times zero = zero
Mult inverse Reciprocal ( 7 x 0 = 0 x 7)
Created by: kltnunley