What is the definition of a variable in algebra?
Algebra Semester Review

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A variable is a symbol, often a letter, that represents one or more numbers.
2.
FLASHCARD QUESTION
Front
What does it mean to solve an equation?
Back
To solve an equation means to find the value(s) of the variable(s) that make the equation true.
3.
FLASHCARD QUESTION
Front
What is the purpose of using Desmos in algebra?
Back
Desmos is a graphing calculator that helps visualize equations and inequalities.
4.
FLASHCARD QUESTION
Front
What is a linear equation?
Back
A linear equation is an equation that makes a straight line when graphed, typically in the form y = mx + b.
5.
FLASHCARD QUESTION
Front
What does the 'r' value represent in a linear equation?
Back
The 'r' value often refers to the slope of the line, indicating its steepness and direction.
6.
FLASHCARD QUESTION
Front
What is the difference between an expression and an equation?
Back
An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.
7.
FLASHCARD QUESTION
Front
How do you find the slope of a line given two points?
Back
The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1).
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