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The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential models; and Quadratic equations, functions, and graphs.
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Khan Academy
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Wolfram|Alpha: Computational Intelligence
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Microsoft Math Solver - Math Problem Solver & Calculator
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Wolfram MathWorld: The Web's Most Extensive Mathematics …
2024年11月21日 · Comprehensive encyclopedia of mathematics with 13,000 detailed entries. Continually updated, extensively illustrated, and with interactive examples.