Elementary Algebra and Functions
Explore numbers and expressions; equations and inequalities; functions and growth. Concepts and connections are available independently of video coverage.
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Linear equations
A one-variable linear equation has the form ax+b=0 with a nonzero for a unique solution.
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Absolute value
Absolute value measures distance from zero on the real line.
Functions
A function assigns exactly one output to each input in its domain; its domain matters when comparing expressions.
Number systems
Natural, integer, rational, real and complex numbers support progressively broader operations.
Quadratic equations
The discriminant determines the real-root structure of a quadratic with nonzero leading coefficient.
Algebraic expressions
Expressions combine constants, variables and operations without necessarily asserting an equation.
Knowledge connections
- Quadratic equations · Related · Map context
- Absolute value · Related · Map context
- Number systems · Related · Map context
- Functions · Related · Map context