Cool Math
Coolmath: Perpendicular Lines
This CoolMath Resource will help students determine if lines are perpendicular by finding the slope, using the point-slope formula, and graphing.
Cool Math
Coolmath: Parallel Lines
This CoolMath resource will help students understand how to use slope and the point-slope form to determine if two lines are parallel.
Cool Math
Coolmath: More on Tangent Lines
This CoolMath resource provides instruction and practice for tangent lines.
Paul Dawkins
Paul's Online Notes: Tangent Lines and Rates of Change: Practice Problems
This section introduces two problems: rate of change of a function and tangent lines to functions. Both of these problems will be used to introduce the concept of limits.
Math Open Reference
Math Open Reference: Perpendicular Lines
A complete reference guide to perpendicular lines. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Slope of a Line
Learn about the slope of a line with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Intercept of a Line
A complete reference guide to finding the intercept of a line. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
CK-12 Foundation
Ck 12: Interactive Geometry: 10.4 Slope of Parallel and Perpendicular Lines
Understand how to find the slope of parallel and perpendicular lines.
PBS
Pbs Learning Media: Comparing Slopes
This interactive exercise focuses on linear equations and how a positive or negative slope affects the graphical representation.
PBS
Pbs: The Lowdown: Made in America: The High Cost of Fashion
Investigate data on changes over time in where our apparel is made and how much we spend on it in these images from KQED. In the accompanying classroom activity, students use the interactive and graph the data. They also look for...
PBS
Pbs: The Lowdown: Analyzing Functional Relationships: An Equitable Society?
In this interactive, explore data presented in a series of graphs to evaluate whether we are any closer to having an equitable society than we were in 1963, the year of the historic March on Washington. In the accompanying classroom...
PBS
Pbs: String Product: Finding the Y Intercept
Examine how a giant piece of art at the National Museum of Mathematics reveals some unexpected relationships between coordinates on a parabola. This video focuses on the relationship between negative and positive points on the parabola...
PBS
Pbs: Ski Jumping: Understanding Proportional Relationships
Investigate the slopes involved in ski jumping. This video focuses on defining slope, showing how to calculate slope on a graph, with an expression, and positive and negative slopes.
PBS
Pbs: Xy Flyer
Explore the behavior of lines by composing equations to launch a toy airplane through a series of hoops. This interactive exercise focuses on working in the coordinate plane and deepening the understanding of how slope and y-intercept...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Linear Equations
A guide to support parents as they work with their students in linear equations.
PBS
Pbs: Stairway Slope
Use the stairs in your home to understand slope in the real world. This video focuses on reinforcing your understanding of slope as rise over run and placing measurements into ratios.
PBS
Pbs: Slope and House Construction
Discover how math is required for quality construction when a Master Carpenter shares his experience and expertise. This video focuses on explaining slope as rise over run and shows how slope comes into play when building homes to take...
Other
Nearpod: Linear Equations & Graphs
In this lesson on linear equations and graphs, students will learn how to graph linear equations and create linear equations based upon real-life word problems.
Other
Nearpod: What Is Slope?
In this instructional activity on slope, students explore how the rate of change can be identified using a graph, a set of points, and a table.
Houghton Mifflin Harcourt
Harcourt: School Publishers: Positive Slope
Contains one example of a line with a positive slope. Included is the equation for the line and a definition of a positive slope.
Houghton Mifflin Harcourt
Harcourt: School Publishers: Negative Slope
This site provides an example of a negative slope, including the equation of the line shown. Also given is a definition of a negative slope.
Math.com
Math.com: Graphing Equations Unit Quiz
The unit quiz consists of eight true or false questions that examine graphing linear equations. Solutions are provided.
Wolfram Research
Wolfram Math World: Algebra
MathWorld provides a basic overview of Algebra. Includes a few formulas and many links to related topics.