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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Number systems
Natural, integer, rational, real and complex numbers support progressively broader operations.
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Bijections
A bijection is both injective and surjective and has a two-sided inverse.
Exponent laws
Power identities simplify products and quotients where bases and exponents satisfy the required domain conditions.
Fractions and ratios
Fractions express quotients with nonzero denominators; ratios compare quantities with compatible units.
Linear equations
A one-variable linear equation has the form ax+ with a nonzero for a unique solution.
Absolute value
Absolute value measures distance from zero on the real line.
Knowledge connections
- Fractions and ratios · Related · Map context
- Exponent laws · Related · Map context
- Bijections · Related · Map context
- Linear equations · Related · Map context