Math Planet
Math Planet: Algebra 1: Writing Linear Equations Using the Slope Intercept Form
Explains what the slope-intercept form is and how to find the equation of a line given two points on it. Includes modeled video lesson. [3:32]
CK-12 Foundation
Ck 12: Algebra: Equations of Perpendicular Lines
[Free Registration/Login may be required to access all resource tools.] This lesson covers determining if two lines are parallel, perpendicular, or neither and finding the equation of perpendicular lines to a given line.
CK-12 Foundation
Ck 12: Algebra: Families of Lines
[Free Registration/Login may be required to access all resource tools.] Find the equation of a line that is parallel or perpendicular to a given line.
University of South Florida
Fcat: Spaghetti Bridges: Teacher Notes
Students build bridges and test their strength to collect data and write an equation. The concept of slope is explored in this activity.
Washington State University
Washington State University: Slope Intercept, Point Slope Forms
Washington State University provides a lesson on finding the slope of an equation and putting the equation into the desired form. The site also contains informatinon concerning parallel and perpendicular lines.
Other
Git: What Is the Slope Intercept Form of a Line?
Not only does this site show what the slope-intercept form is, but it helps you find the slope and the intercept of a line. There is also additional information on parallel lines, parametric form, and the distance between two points.
Discovery Education
Discovery Education: Web Math: Find Equation of Line Given That You Know Its Slope and Y Intercept
WebMath offers a java applet that allows you to input the slope and y-intercept of a line and gives you the equation of the line in slope-intercept form. It also gives a detailed solution using the information that you provided.
Texas Instruments
Texas Instruments: Explore Parallel and Perpendicular Lines
Students can use a graphing calculator to explore graphs of parallel and perpendicular lines. Students will find that parallel lines have the same slope and different y-intercepts and that the slopes of two perpendicular lines are...
Illustrative Mathematics
Illustrative Mathematics: 8.ee Proportional Relationships, Lines, and Equations
For this task, 8th graders are shown the graphs of two lines with the same slope. They are given the equation for the first line and the coordinates of a point on the second and are asked to find the equation for the second line. Aligns...
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Equation of a Line
The tutorial explores how to find the equation of a line. Students learn about the concept through class notes, examples, and practice problems. Review exercises and a chapter quiz are included.
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.
Mathematics Archives
Math Archives: Visual Calculus: Tangent Lines to Polar Graphs
This site give the formula for finding the slope of the tangent line to a polar graph. The page offers step by step explanations and worked examples.
Sophia Learning
Sophia: Finding a Coordinate When Given the Slope: Lesson 2
this lesson presents how to find a coordinate of an ordered pair that falls on a line with a given slope. It is 2 of 5 in the series titled "Finding a Coordinate When Given the Slope."
University of Regina (Canada)
Univeristy of Regina: Math Central: Tangent Lines and Circle Equations
This site offers a problem and solution to finding all possible slopes for a line tangent to a circle given a particular equation of a circle. Could be an interesting challenge for students.
ClassFlow
Class Flow: Slope Review
[Free Registration/Login Required] This flipchart provides another day of review of finding the slope of a line.
Math Graphs
Houghton Mifflin: Math Graphs: Slope of a Tangent Line 15 [Pdf]
The practice problem compares finding the slope of the tangent line graphically and analytically. The handout is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Slope of a Tangent Line 16 [Pdf]
The practice problem compares finding the slope of the tangent line graphically and analytically. The handout is available in PDF format.
Department of Defense
Do Dea: Normal Line to a Curve
The tangent to a curve is always found at a certain point along the curve. Often you will be asked to find the normal to a curve at a point. View an example on this site.
Texas Education Agency
Texas Gateway: Tea Statistics: The Regression Equation
A tutorial on how to find the line of best fit or least-squares regression line for a set of data in a scatter plot using different methods and calculations.
Texas Instruments
Texas Instruments: Getting Started With the Ti Navigator: Equations of My Road
This lesson introduces students to the use of a map of an area, a neighborhood, a favorite city, or an amusement park, to determine the slope of a specific road. Students will find the slope of a line using a coordinate plane.
Ducksters
Ducksters: Kids Math: Graphs and Lines Glossary and Terms
This site contains a math glossary and terms on graphs and lines for kids. Find definitions used in this mathematics subject such as coordinates, midpoint, and slope.
Texas Instruments
Texas Instruments: Inferences of the Least Squares Regression
This set contains questions regarding inference for the slope of the least-squares linear regression line. The student learns to develop hypotheses, find the test statistic, and reach a conclusion in the context of the original problem.
Illustrative Mathematics
Illustrative Mathematics: S Id.7 Used Subaru Foresters
Jane wants to sell her Subaru Forester and does research online to find other cars for sale in her area. She examines the scatterplot of price versus age and determines that a linear model is appropriate. Answer a variety of questions...
CK-12 Foundation
Ck 12: Algebra: Rates of Change
[Free Registration/Login may be required to access all resource tools.] Find the rate of change associated with real-world scenarios.