Unit 3: Intro To Linear Functions
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3.1 Functions
3.1a Functions: Defining & Identifying Functions
3.1b Functions: Domain & Range
3.2 Linear Functions
3.2a Representations Linear Functions
3.2b Discrete & Continuous Data
3.3 Using Function Notation to Evaluate and Interpret
3.5 Graphing Linear Equations in Slope-Intercept Form
3.6 Modeling Direct Variation
3.4 Graphing Linear Equation in Standard Form
3.4a Graphing Linear Equations in Standard Form
3.4b Graphing Linear Equations in Standard Form
3.1a – Functions: Defining & Identifying Functions
Students will define a function and determine if a relation is a function from tables, graphs, mappings, and ordered pairs (A.12A).
3.1b – Functions: Domain & Range
Students will identify and describe the domain and range of a function using numerical, graphical, and verbal representations (A.2C, A.12B).
3.2a – Representations of Linear Functions
Students will represent linear functions using equations, tables, graphs, and verbal descriptions, and convert between forms (A.3B).
3.2b – Discrete & Continuous Data
Students will distinguish between discrete and continuous relationships in context and justify the classification based on graphs and situations (A.12E).
3.3 – Using Function Notation to Evaluate and Interpret
Students will evaluate functions using function notation and interpret values in context of real-world problems (A.12C, A.12D).
3.5 – Graphing Linear Equations in Slope-Intercept Form
Students will graph linear equations using slope-intercept form and identify slope and y-intercept from equations and graphs (A.3C, A.3D).
3.6a – Modeling Direct Variation
Students will write equations to model direct variation and determine whether data represents a direct variation relationship (A.2I).
3.6b – Modeling Direct Variation
Students will interpret graphs and real-world problems involving direct variation and explain the meaning of the constant of proportionality (A.2D).
3.4a – Graphing Linear Equations in Standard Form
Students will find x- and y-intercepts and use them to graph linear equations in standard form (A.3E).
3.4b – Graphing Linear Equations in Standard Form
Students will interpret standard form equations in real-world contexts and relate them to graphs (A.3A).
These are the same guided notes we use in class—perfect for staying organized or catching up after an absence.
They may be worksheets or textbook problems, depending on the topic. Check back regularly to stay on track—no early access to homework! The expectation is if you do not finish this in class you are finishing it at home!
💡 Remember: Always attempt the work on your own before checking the answers. These keys are here to support your learning—not replace it!
Find the key by scrolling to the right!These pages match your Big Ideas Math textbook and are great for reviewing examples, completing assignments, or getting extra practice at home.
Watch the videos linked below for step-by-step examples, topic reviews, and helpful tips.
These videos align with the lessons we are doing in class and are great for getting ahead, extra support, review, or catching up if you’ve been absent.
3.1a
3.1b
3.2a
3.2b
3.3
3.5 part I
3.5 part II
3.6
3.4a
3.4b
Use them to review, fill in anything you missed, and make sure your notes are complete and accurate.
Click on the section titles to jump to the notes you need. You can scroll through without opening a new window. Slides also include a home button to return to the main page for easy navigation.
Looking for more ways to practice or dive deeper? This section includes optional review sheets, helpful videos, challenge problems, formula reference pages, and other helpful tools to support your success in Algebra 1. Use these resources to strengthen your understanding or get ahead!
The only way to get better at math is to PRACTICE!!
Below are some links to extra practice worksheets. Answer keys can be found on the last page of the PDF.
There are tons of videos online, and it can feel overwhelming to sort through them all. I’ve already done the work of finding some that match what we’re learning in class.
Use the videos below if you’d like another explanation of the topic—or if you just want some extra practice!
3.1a - Identifying Functions
3.1b - Domain & Range (Inequality Notation)
3.2a - Identifying Linear Functions
3.2a - Identifying Linear Functions from Tables
3.2b - Discrete Vs Continuous
3.3 - Function Notation
3.5 - Slope Intercept Form
3.5 - Slope Intercept Form
3.6 - Direct Variation
(k and a are the same thing)3.4 - Standard From
3.4 - Standard Form
3.4 - Standard Form (Word Problem)