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PA Vocab Ch1

TermDefinition
conjecture An educated guess.
inductive reasoning Reasoning based on a pattern of examples or past events.
evaluate Find the numerical value of an expression.
numerical expression A combination of numbers and operations such as addition, subtraction, multiplication, and division.
order of operations Parentheses, Exponents, Multiplication and Division, Addition and Subtraction
algebraic expression An expression that contains sums and/or products of variables and numbers.
variable A placeholder for any value.
defining a variable Choosing a variable and a quantity for the variable to represent in an equation.
properties Statements that are true for any number.
counterexample An example that shows a conjecture is not true.
deductive reasoning The process of using facts, properties, or rules to justify reasoning or reach valid conclusions.
simplify To write an expression in a simpler form.
equation A mathematical sentence that contains an equals sign (=).
solution A value for the variable that makes an equation true.
solving the equation The process of finding a solution to an equation.
coordinate plane Formed by the intersection of two number lines that meet at right angles at their zero points
ordered pair A pair of numbers used to locate any point on a coordinate plane.
origin The point at which the number lines intersect in a coordinate system.
x-axis The horizontal number line which helps to form the coordinate plane.
x-coordinate The first number of an ordered pair.
y-axis The vertical number line which helps to form the coordinate plane.
y-coordinate The second number of an ordered pair.
graph A dot at the point that corresponds to an ordered pair on a coordinate plane.
domain The set of all x-coordinates from each pair.
range The range of a relation is the set of all y-coordinates from each ordered pair.
relation A set of ordered pairs.
Created by: jenn_snook
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