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Texas A&M University
Systems of Linear Equations an Introduction [Pdf]
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.
Alabama Learning Exchange
Alex: Systems on a Mission
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...
Khan Academy
Khan Academy: Algebra: Constraint Solutions of Systems of Inequalities
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,...
CK-12 Foundation
Ck 12: Algebra: Intercepts by Substitution
[Free Registration/Login may be required to access all resource tools.] Learn how to graph linear equations by finding intercepts using substitution.
Texas Instruments
Texas Instruments: Linear Inequalities
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.
Windstream
Ojk's Precalculus Study Page: Polynomial Inequalities, One Variable
This tutorial offers two methods to solve polynomial inequalities. Site includes several examples, charts, graphs, and other information for student understanding.
Science Education Resource Center at Carleton College
Serc: Investigating Calculating the Effect of Mass, Length and Displacement
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...
Math Planet
Math Planet: Algebra 1: Graphing Linear Systems
Gain an understanding of how to solve linear equations by viewing an example and a video lesson. [3:01]
Purple Math
Purplemath: Solving Linear Inequalities: Introduction and Formatting
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...
Math Graphs
Houghton Mifflin: Math Graphs: Estimating Slope 10 [Pdf]
Learners determine how much one variable changes in relation to the change of another variable. The math graph is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Estimating Slope 11 [Pdf]
Learners determine how much one variable changes in relation to the change of another variable. The math graph is available in PDF format.
Khan Academy
Khan Academy: Lsn 13: Systems of Equations, Algebraic and Graphical Representations
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...
Texas Instruments
Texas Instruments: How Far to Your Birthplace
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...
Math Planet
Math Planet: Systems of Linear Inequalities
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...
Interactive Mathematics
Interactive Mathematics: Solving Inequalities W/ Absolute Value
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.
Illustrative Mathematics
Illustrative Mathematics: A Rei Solution Sets
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...
Texas Instruments
Texas Instruments: Implicit Differentiation
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...