CK-12 Foundation
Intercepts and the Cover-Up Method: The Hidden Zeros
There's no need to cover up this resource — it's good one! Pupils use a slider interactive that covers up parts of the standard form of a linear equation and simultaneously reveals one of the intercepts of the graph. This lets them see...
Curated OER
Linear and Quadratic System
Learners find the common point of a linear and quadratic system given a graph of the system. Then they find a specific point located only on the parabola.
Teach Engineering
Graphing Equations on the Cartesian Plane: Slope
Slopes are not just for skiing. Instructors introduce class members to the concept of slope and teach them how to calculate the slope from a graph or from points. The lesson also includes the discussion of slopes of parallel and...
EngageNY
Lines That Pass Through Regions
Good things happen when algebra and geometry get together! Continue the exploration of coordinate geometry in the third instructional activity in the series. Pupils explore linear equations and describe the points of intersection with a...
Curated OER
Interval Notation and Linear Inequalities
In this interval notation and linear inequalities learning exercise, learners use number lines and solve equations. Students complete 64 problems total.
Curated OER
Wacky Water World: Student Worksheet
This well-designed math worksheet invites learners to work in pairs in order to determine which plan is the better value when going to an amusement park. Plan A and Plan B each have different admission fees, and different rates per ride....
Curated OER
Linear Inequalities
In this linear inequalities worksheet, students solve and graph systems of inequalities on a coordinate plane.  Examples and explanations are provided.  This five-page worksheet contains 32 problems.  Answers are provided at the end of...
Curated OER
Solving a System of Equations
In this Algebra II worksheet, 11th graders determine the solution to a system of one linear and one quadratic equation.  The two page worksheet contains a combination of nine multiple choice and free response questions. ...
Curated OER
Linear Graph
Students solve linear equations and graph the different functions. In this algebra lesson, students graph piecewise functions using the slope and y-intercept and the given restrictions on the domain of the line. They discuss rate of...
Curated OER
Graph Linear Inequalities
Int his algebra learning exercise, 11th graders solve linear inequalities using algebra and graph their solution on a graph. They analyze graphs and write an equation for the inequality. There are 4 questions with an answer key.
Curated OER
Graphing Linear Functions - Review
Learners graph linear functions.  They plot three points, create a line, and discuss methods to find the slope of  line.  In groups, students solve problems, graph their lines and find the slope of a line using various methods.    Upon...
Curated OER
Linear Equations and Functions - Area and Perimeter
Students use information they know to decorate a room at a reasonable cost by comparing the cost of companies for a decorating job. For this cost lesson plan, students take into consideration the area and perimeter of the room.
Curated OER
Standard Linear Form
Ninth graders identify and describe the x-intercept as the place where the line crosses the x-axis as it applies to football.  They create their own differentiations to reinforce the distinction between the x-intercept and the...
Curated OER
Investigating Linear Equations Using Graphing Calculator
Students investigate linear equations using the Ti-Calculator. In this algebra lesson, students graph lines and identify the different quadrants on a coordinate plane. They identify ordered pairs used to plot lines.
Curated OER
I Can Do This! Systems of Equations
Students solve systems of 2-by-2 linear equations using tables,
graphs and substitution. In small groups, classmates work together to discover strategies for solving equations.  They use a calculator to graphically represent  their answers.
Curated OER
Linear Functions
Learners solve, identify and define linear equations. In this algebra instructional activity, students calculate the slope and y-intercept of a line. They graph the line given two points and the slope.
Curated OER
Race Track (Culminating Activity)
Students graph and solve linear equations. In this algebra instructional activity, students use the slope and y-intercept to graph lines. They relate lines to the real world using different applications.
Curated OER
Graphing Linear Functions Three
In this algebra learning exercise, students are given an equation and asked to create a table of values and graph their equation. The other method they use for graphing is the slope intercept method, by solving the equation for y and...
Inside Mathematics
Sorting Functions
Graph A goes with equation C, but table B. The short assessment task requires class members to match graphs with their corresponding tables, equations, and verbalized rules. Pupils then provide explanations on the process they used to...
Inside Mathematics
Squares and Circles
It's all about lines when going around. Pupils graph the relationship between the length of a side of a square and its perimeter. Class members explain the origin in context of the side length and perimeter. They compare the graph to the...
Charleston School District
Graphs of Linear Functions
What does a slope of 2/3 mean? Develop an understanding of the key features of a linear function. Pupils graph the linear functions and explain the meaning of the slope and intercepts of the graphs. 
Mathematics Vision Project
Module 2: Linear and Exponential Functions
Write, graph, and model all things linear and exponential. Building on the previous module in a nine-part Algebra I series, learners compare linear exponential modeling. They write equations, graph functions, and analyze key features.
BW Walch
Solving Systems of Linear Inequalities
One thing that puzzles a lot of young algebrists is the factors in a word problem that are taken as "understood". This presentation on solving systems of linear inequalities does a great job walking the learner through how to tease those...
Virginia Department of Education 
Linear Modeling
An inquiry-based algebra lesson explores real-world applications of linear functions. Scholars investigate four different situations that can be modeled by linear functions, identifying the rate of change, as well as the...
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