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www.sparknotes.com/math/algebra2/functions/section1

Functions A function is a relation in which each input has only one output. In the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2. Examples: \: y is a function of x, x is a function of y.

www.mathplanet.com/education/algebra-2

Algebra 2 is the third math course in high school and will guide you through among other things linear equations, inequalities, graphs, matrices, polynomials and radical expressions, quadratic equations, functions, exponential and logarithmic expressions, sequences and series, probability and trigonometry.

www.mathsisfun.com/sets/function.html

what goes into the function is put inside parentheses after the name of the function: So f(x) shows us the function is called "f", and "x" goes in. And we usually see what a function does with the input: f(x) = x 2 shows us that function "f" takes "x" and squares it.

www.mathplanet.com/education/algebra-2/how-to-graph-functions-and-linear...

Menu Algebra 2 / How to graph functions and linear equations / Functions and linear equations If we in the following equation y=x+7 assigns a value to x, the equation will give us a value for y.

www.ixl.com/math/algebra-2

Algebra 2 Here is a list of all of the skills students learn in Algebra 2! These skills are organized into categories, and you can move your mouse over any skill name to preview the skill.

Learn algebra 2 for free—tackle more complex (and interesting) mathematical relationships than in algebra 1. ... about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere ...

mathinsight.org/function_examples

Basic examples of functions illustrating the definition of a function. A function is a mapping from a set of inputs (the domain) to a set of possible outputs (the codomain).The definition of a function is based on a set of ordered pairs, where the first element in each pair is from the domain and the second is from the codomain. But, a metaphor that makes the idea of a function easier to ...

www.mathsisfun.com/algebra/index-2.html

Algebra 2. OK. So what are you going to learn here? You will learn about Numbers, Polynomials, Inequalities, Sequences and Sums, many types of Functions, and how to solve them. You will also gain a deeper insight into Mathematics, get to practice using your new skills with lots of examples and questions, and generally improve your mind. ...