Oops. Something went wrong. Please try again. Uh oh, it looks like we ran into an error. You need to refresh. If this problem persists, tell us.

In this unit, we learn about functions, which are mathematical entities that assign unique outputs to given inputs. We'll evaluate, graph, analyze, and create various types of functions.

What are rational functions? How do we plot them? What is their domain and range? Let's find out. We break down the definition of the function given in set-builder form and plot the graph by connecting …

Functions assign a single output for each of their inputs. In this video, we see examples of various kinds of functions.

Explora funciones algebraicas con lecciones y ejercicios gratuitos en Khan Academy. Mejora tus habilidades matemáticas de manera interactiva y accesible.

To carry out their functions, cells rely on many specialized parts. Each of these parts has its own role in helping the cell work properly.

可汗学院提供代数函数相关的课程和练习，帮助学生掌握代数知识。

Opa. Algo deu errado. Por favor, tente novamente. Ah não, parece que ocorreu um erro. Você precisa atualizar. Se o problema persistir, fale conosco.

Master 7th grade math topics including geometry, statistics, and equations through engaging tutorials and exercises on Khan Academy.

Our mission is to provide a free, world-class education to anyone, anywhere.