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Common Core Math - Grade 8 Chapter 1
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Pearson Middle School Math - Algebra Readiness
Terms in this set (21)
absolute value
The distance a number is from zero on a number line.
additive inverses
Two numbers with the sum of zero (0).
algebraic expression
A mathematical phrase that uses variables, numbers, and operation symbols.
conjecture
A conclusion reached through inductive reasoning.
coordinate plane
The plane formed by two numbers lines that intersect at their zero (0) points.
counterexample
An example that proves a statement false.
deductive reasoning
The process of reasoning logically from given facts to a conclusion.
evaluate
To replace each variable with a number and then follow the order of operations.
inductive reasoning
Making conclusions based upon patterns you observe.
integers
The set of positive whole numbers and their opposites(negative numbers) and zero (0).
Inverse Property of Addition
The sum of an integer and its additive inverse is zero (0).
opposites
Numbers that are the same distance from zero (0) on the number line but in opposite directions.
order of operations
1. Work inside grouping symbols.
2. Work with exponents.
3. Multiply or divide in order from left to right.
4. Add or subtract in order from left to right.
ordered pair
A pair of numbers that gives a location of a point in a coordinate plane. The first number is the x-coordinate and the second number is the y-coordinate.
origin
The intersection of the x-axis and the y-axis in the coordinate plane. It is described by the ordered pair(0,0).
quadrant
The four (4) regions determined by the x-axis and y-axis of the coordinate plane.
variables
A letter that stands for a number.
x-axis
The horizontal number line, that together with the y-axis establishes the coordinate plane.
x-coordinate
The horizontal position of a point in the coordinate plane.
y-axis
The vertical number line, that together with the x-axis establishes the coordinate plane.
y-coordinate
The vertical position of a point in the coordinate plane.
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