If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

Updates coming!

We will update this course in late July with expanded Common Core standards coverage for Algebra I. Your mastery percentages will change, but you will keep your progress in the exercises where you've already worked.

Evaluating functions: FunctionsInputs and outputs of a function: FunctionsFunctions and equations: FunctionsInterpreting function notation: FunctionsIntroduction to the domain and range of a function: FunctionsDetermining the domain of a function: Functions

Recognizing functions: FunctionsMaximum and minimum points: FunctionsIntervals where a function is positive, negative, increasing, or decreasing: FunctionsInterpreting features of graphs: FunctionsAverage rate of change: FunctionsAverage rate of change word problems: FunctionsIntro to inverse functions: Functions

Multiplying monomials by polynomials: Quadratics: Multiplying & factoringMultiplying binomials: Quadratics: Multiplying & factoringSpecial products of binomials: Quadratics: Multiplying & factoringIntroduction to factoring: Quadratics: Multiplying & factoring

Factoring quadratics intro: Quadratics: Multiplying & factoringFactoring quadratics by grouping: Quadratics: Multiplying & factoringFactoring quadratics with difference of squares: Quadratics: Multiplying & factoringFactoring quadratics with perfect squares: Quadratics: Multiplying & factoringStrategy in factoring quadratics: Quadratics: Multiplying & factoring

Intro to parabolas: Quadratic functions & equationsSolving and graphing with factored form: Quadratic functions & equationsSolving by taking the square root: Quadratic functions & equationsVertex form: Quadratic functions & equationsSolving quadratics by factoring: Quadratic functions & equations

The quadratic formula: Quadratic functions & equationsCompleting the square: Quadratic functions & equationsQuadratic standard form: Quadratic functions & equationsFeatures & forms of quadratic functions: Quadratic functions & equationsTransforming quadratic functions: Quadratic functions & equations

Test your knowledge of the skills in this course. Have a test coming up? The Course challenge can help you understand what you need to review.