A2.14
Explain why the x-coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x).
Khan Academy ResourcesGraphs of polynomials: Challenge problemsZeros of polynomials & their graphsGraphs of polynomialsSymmetry of algebraic modelsPositive & negative intervals of polynomialsQuadratic word problems (standard form)Periodicity of algebraic modelsZeros of polynomials (with factoring)Interpret quadratic modelsEnd behavior of algebraic modelsPositive & negative intervals of polynomialsZeros of polynomials (multiplicity)Features of quadratic functionsParabolas introZeros of polynomials (factored form)Solving quadratics by completing the square: no solutionPeriodicity of algebraic modelsInterpret quadratic models: Factored formZeros of polynomials (with factoring): groupingParabolas introMultiplicity of zeros of polynomialsEnd behavior of algebraic modelsSymmetry of algebraic modelsZeros of polynomials: matching equation to graphZeros of polynomials: matching equation to zerosVertex form introductionForms & features of quadratic functionsZeros of polynomials: plotting zerosWorked examples: Forms & features of quadratic functionsComparing features of quadratic functionsInterpret quadratic models: Vertex formZeros of polynomials (with factoring): common factorZeros of polynomials (multiplicity)Zeros of polynomials introduction

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