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  1. What is a function? (video) | Functions | Khan Academy

    Rearranging to solve for the variable you want to measure, you get a function (as long as there's not multiple outputs for any input)! Functions involve anything with an independent and dependent …

  2. Functions | Algebra 1 | Math | Khan Academy

    About this unit A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions. Unit guides are here! Power up your …

  3. Functions | Integrated math 1 | Khan Academy

    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.

  4. Functions | Algebra (all content) | Math | Khan Academy

    Inputs and outputs of a function Learn Worked example: matching an input to a function's output (equation)

  5. Functions | College Algebra | Math | Khan Academy

    A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions.

  6. Equations vs. functions (video) | Functions | Khan Academy

    A function by definition is a relationship where each input value (x) creates one output value (y). For the equation x=7, every point on the line has an x-value = 7 and the y-values will be different.

  7. Rational functions (video) - Khan Academy

    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 …

  8. Advanced function types | College Algebra | Math | Khan Academy

    Let's use the building blocks of simpler function types to explore functions that zig-zag or twist across the screen. Come explore the weird and wonderful world of absolute value graphs, piecewise functions, …

  9. Nonlinear functions | Lesson (article) | Khan Academy

    A function takes an input and produces an output. In function notation, f (x) , f is the name of the function, x is the input variable, and f (x) is the output.

  10. Algebra 1 | Math | Khan Academy

    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 …