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Algebra Essentials
Key algebra concepts including equations, variables, and functions
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Card 1
What is a variable in algebra?
A symbol (usually a letter) that represents an unknown or changeable value in an equation or expression.
Card 2
What is the order of operations (PEMDAS)?
Parentheses, Exponents, Multiplication/Division (left to right), Addition/Subtraction (left to right).
Card 3
What is a linear equation?
An equation whose graph is a straight line, typically in the form y = mx + b, where m is slope and b is y-intercept.
Card 4
What is the quadratic formula?
x = (-b ± √(b²-4ac)) / 2a, used to solve equations in the form ax² + bx + c = 0
Card 5
What does "slope" mean in algebra?
The steepness of a line, calculated as rise/run or (y₂-y₁)/(x₂-x₁). It represents the rate of change.
Card 6
What is factoring in algebra?