Activity
Texas A&M University

Systems of Linear Equations an Introduction [Pdf]

For Students 9th - 10th Standards
Use this site to see how graphing and substitution are used to solve systems of equations. The examples have systems that have one, infinite, or no solutions. The site is set up to see the solutions step by step.
Lesson Plan
Alabama Learning Exchange

Alex: Systems on a Mission

For Teachers 9th - 10th
After solving one system of equations by the methods of graphing, elimination using addition or subtraction, elimination using multiplication, and substitution, students will be given four systems to be solved by one of each of the four...
Unknown Type
Khan Academy

Khan Academy: Algebra: Constraint Solutions of Systems of Inequalities

For Students 9th - 10th Standards
Find the range of values of one variable that corresponds to a given value of the other variable in a system of two-variable linear inequalities. Students receive immediate feedback and have the opportunity to try questions repeatedly,...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Intercepts by Substitution

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to graph linear equations by finding intercepts using substitution.
Activity
Texas Instruments

Texas Instruments: Linear Inequalities

For Teachers 9th - 10th Standards
In this question set, students are asked to solve inequalities in one variable, graph linear inequalities, and graph systems of linear inequalities. Questions are multiple choice and true/false; solutions are included.
Activity
Windstream

Ojk's Precalculus Study Page: Polynomial Inequalities, One Variable

For Students 9th - 10th
This tutorial offers two methods to solve polynomial inequalities. Site includes several examples, charts, graphs, and other information for student understanding.
Lesson Plan
Science Education Resource Center at Carleton College

Serc: Investigating Calculating the Effect of Mass, Length and Displacement

For Teachers 9th - 10th
In this physics lab activity students investigate how mass, length and angular displacement affect the period of a simple pendulum. Students control variables, testing one variable at a time, using manual techniques (stopwatch, human...
Handout
Math Planet

Math Planet: Algebra 1: Graphing Linear Systems

For Students 8th - 9th Standards
Gain an understanding of how to solve linear equations by viewing an example and a video lesson. [3:01]
Website
Purple Math

Purplemath: Solving Linear Inequalities: Introduction and Formatting

For Students 9th - 10th Standards
This resource demonstrates how to solve linear inequalities step-by-step and shows four different solution formats/notations viz. inequality notation, set notation, interval notation, and the last "notation" which is more of an...
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Math Graphs

Houghton Mifflin: Math Graphs: Estimating Slope 10 [Pdf]

For Students 9th - 10th Standards
Learners determine how much one variable changes in relation to the change of another variable. The math graph is available in PDF format.
Unknown Type
Math Graphs

Houghton Mifflin: Math Graphs: Estimating Slope 11 [Pdf]

For Students 9th - 10th Standards
Learners determine how much one variable changes in relation to the change of another variable. The math graph is available in PDF format.
Lesson Plan
Khan Academy

Khan Academy: Lsn 13: Systems of Equations, Algebraic and Graphical Representations

For Teachers 9th - 10th Standards
Lesson 3 of 4 for Passport to Advanced Math. Learners will solve systems of equations in two variables in which one equation is linear and the other equation is quadratic or another nonlinear equation; relate properties of the function f...
Activity
Texas Instruments

Texas Instruments: How Far to Your Birthplace

For Teachers 6th - 8th
Examine one-variable data analysis through the creation and exploration of a birth place data set. Graphing calculators are used to analyze the data through mean, median, mode, maximum, minimum, stem-and-leaf plots and box-and-whisker...
Unit Plan
Math Planet

Math Planet: Systems of Linear Inequalities

For Students 9th - 10th Standards
A system of linear inequalities in two variables consists of at least two linear inequalities in the same variables. The solution of a linear inequality is the ordered pair that is a solution to all inequalities in the system and the...
Unknown Type
Interactive Mathematics

Interactive Mathematics: Solving Inequalities W/ Absolute Value

For Students 9th - 10th
These examples can help you solve absolute value inequalities. They show each step and are easy to follow. The last example demonstrates how to graph the solution.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A Rei Solution Sets

For Teachers 9th - 10th Standards
For this task, students are shown the graphs of two equations, with areas bounded by their lines and intersections shaded in different colors. They are asked to write a system of equations or inequalities for each shaded area and explain...
Activity
Texas Instruments

Texas Instruments: Implicit Differentiation

For Teachers 9th - 10th
Students differentiate an equation in two variables with respect to one. They calculate points where the tangent line is horizontal, vertical, or oblique and use the graphing capacity of the TI-89 to display the graph of the implicit...