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Mr. Edwards 1

Basic Algebra Vocabulary

TermDefinition
Algebra A math that uses numbers and variables to represent relationships and has rules to solve for the unknown or changing amounts represented by the variables.
Whole Number O, 1, 2, 3.... The positive numbers and zero with no fractions or decimals.
Natural or Counting Numbers 1, 2, 3... The positive numbers with no fractions or decimals.
Integers ...-3, -2, -1, 0, 1, 2, 3... The positive and negative whole numbers.
Real Numbers All positive and negative numbers including all decimals and fractions.
Rational Numbers All positive and negative numbers except non-terminating, non-repeating decimals.
Irrational Numbers Non-terminating, non-repeating decimals.
x-axis The horizontal line on a coordintate plane. It shows the x values.
y-axis The vertical line on a coordinate plane. It shows the y values.
y-intercept Where a function hits the y axis.
x-intercept Where a function hits the x axis. (Also called zeroes or roots.)
Function A set of ordered pairs where every x value has only one y value. In a graph any vertical line will only hit the graph once.
Relation Any set of ordered pairs.
Zeroes In an equation, the values that make the function equal zero. On the graph, where the function hits the x-axis. (Also called the roots.)
Expression A statement in math that does not have an equal sign or an inequality sign. Example: 2x^3+4x+2 or 3(4x+2).
Equation A math statement that says one expression is equal to another. Ex: 3x+4=3
Inequality A statement in math that says one expression is greater than or less than another expression. Ex: 2x > 3
Created by: meminot