Home › Lessons › 9th Grade Math

Introduction to Functions

9th Grade · Math · Easy · about 10 minutes

HSF-IF.A.1 | Introduction to Functions - Easy level

The first two lessons in every grade and subject are free. This one is part of Premium ($10/month), which unlocks the full catalogue Pre-K through 12th grade plus SAT and ACT prep. See what Premium includes.

Standards referenced

CCSS.Math.Content.HSF-IF.A.1 — Understand that a function from one set (called the domain) to another set (called the range) assigns to each element of the domain exactly one elemen

A standards reference identifies a related skill. It does not certify complete instruction or assessment coverage.

More 9th Grade math lessons

Solving Linear Equations
Graphing Linear Functions
Systems of Equations
Exponent Rules and Properties
Polynomials: Add, Subtract, Multiply
Factoring Polynomials
Quadratic Functions and Graphs
Radical Expressions

Browse the rest of the site

All lessons, Pre-K through 12th grade
Practice tests and full-length SAT & ACT exams
Homework help — photograph the page
Common Core, NGSS and SAT/ACT standards references
Pricing