Khan Academy
Absolute Value Equations
Sal reviews absolute value equations by taking viewers through a careful and deliberate problem-solving process. Those who didn't thoroughly understand absolute value during class will appreciate Sal's steady and straightforward...
Khan Academy
Slope and Y-Intercept Intuition
The instructor uses a computer graphing program to illustrate how a line changes slope by manipulating the slope values in the equation. He also manipulates the y-intercept value to see where the line crosses the y-axis.
Khan Academy
Slope and Rate of Change, Graphing Lines and Slope, Algebra Basics
Introducing slope as "a way of measuring the inclination of a line," Sal endeavors to provide a working knowledge of slope problems and problem-solving. The video is framed as a review but could be a good way to fill any holes in...
Khan Academy
Power Rule Introduction (Old) Taking derivatives, Differential Calculus
This video covers the differential notation dy/dx and generalizes the rule for finding the derivative of any polynomial. It also extends the notion of the derivatives covered in the Khan Academy videos, "Calculus Derivatives 2Ó and...
Khan Academy
Calculus: Derivatives 2
Sal continues where he left off with the last video, "Derivatives 1, Ó by looking at the equation y = x^2 and examining the slope of the second line at a specific point, and again defining the limit as x approaches zero to get the slope...
Khan Academy
The derivative of f(x)=x^2 for any x Taking derivatives, Differential Calculus
By defining the formal definition of a derivative, f(x), Sal can find the general form of the derivate function for the example f(x) = x2. He continues to stress the importance of an intuitive understanding of derivative functions.
Khan Academy
Calculus: Derivatives 2 (New HD Version)
Sal continues where he left off with the last video, "Derivatives 1, Ó by looking at the equation y = x2 and examining the slope of the second line at a specific point. He continues defining the limit as x approaches zero to get the...
Khan Academy
Calculus: Derivatives 1
Sal defines the term derivative by taking the listener on a well-organized tour of the slope. First, he reviews the concept of the slope of a line from algebra, then extends this idea to look at the slope of the curve by first examining...
Khan Academy
Calculus: Derivatives 1 (New HD Version)
Sal defines the term derivative by taking the listener on a well-organized tour of the slope. First, he reviews the concept of the slope of a line from algebra, then extends this idea to look at the slope of the curve by first examining...
Khan Academy
Slope-Intercept Equation From a Graph Examples, Algebra I
This lecture continues reviewing linear equations and slope problems with several example problems. Those who didn't grasp the concepts during class might find this lesson helpful.
Khan Academy
Modeling with Linear Equations Example 2
Sal takes your class’s newfound (or growing) knowledge of graphs of lines to the next level. He presents a few word problems that mathematicians must understand to use linear function graphs.
Khan Academy
Introduction to Graphing Inequalities, Two-Variable Linear Inequalities, Algebra I
If your class struggles with graphing inequalities, or if your lecture could use some help from Sal, this video would be a great help. Sal's instruction is measured and patient, and viewers will walk away feeling more confident and...
Northeast Arkansas Education Cooperative
Interpret The Rate of Change /Slope in the Context of Everyday Life
Find slope all around us and calculate the rate of change during this video that uses real-life situations. Your learners will start by creating a table to see how each change creates the pieces of slope. Plug that slope into your...
National Education Association
Interpret The Rate of Change (Slope) and Intercepts Within The Context of Everyday Life
Word problems are full of valuable information that can be used to create equations. Take your learners on an adventure and figure out a formula that will represent the cost of a rental car. The video asks questions to help understand...
Curated OER
Finding Slope
Introduce slope, slope, and more slope, with this comprehensive video about....slope! Start with the slope formula and transition to counting the slope from a line on a coordinate plane. Your mathematicians will be able to see the...
Curated OER
What are Perpendicular Lines?
By definition, perpendicular lines intersect and form a 90 degree right angle. Want to know how to determine if lines are perpendicular based on two linear equations? Check out their slope values. Are they negative reciprocals? Does...
Curated OER
How to Find the Slope of a Line
Introduce your next math lesson with video that explains how to find the slope of a line through text and visuals. A brief definition and quick example are shown within the first 30 seconds. Note: There is no audio in this video.
Curated OER
How Do You Find the Slope of a Line If You Have a Perpendicular Line?
What kind of lines have slopes that are the opposite reciprocal of each other? Parallel lines? No. Parabolas? No. Perpendicular lines? Yes! Watch and listen as the instructor demonstrates how to make these determinations about...
Curated OER
How Do You Find the Slope of a Line from a Graph?
Given a line on a graph, what's the slope of this line? First, identify two points on the given line. Then, use a formula to find the change in y and then the change in x. This will be represented by rise over run. Watch this video to...
Curated OER
What Does the Slope of a Line Mean?
Evaluate the steepness of lines, also known as the slope, by watching this video. A tutor explains what the slope of a line is and compares two different lines to demonstrate slope. A practical introductory video for classes that are...
Curated OER
How Do You Use Point-Slope Form to Write an Equation from a Table?
Given a table of x and y values, is it possible to write a linear equation from this information? There will be several steps involved. First is to use the point-slope formula to find a slope. Then use that slope and one of the ordered...
Curated OER
How Do You Check if a Point is on a Line If You Have a Graph?
The instructor demonstrates graphically how to verify that a given point lies on the line of a given equation. She graphs a line in slope-intercept form, and then plots the point to verify if it is in fact, on the graph of the line.
Curated OER
What Does Undefined Slope Mean?
The graph of a line with an undefined slope is a vertical line. Why is it undefined? It has something to do with the value of the x-coordinate. The x-coordinate determines the run of the slope. So what if the run is zero? The instructor...
Curated OER
How Do You Find the X-Coordinate of a Point on a Line If You Have Another Point and the Slope?
Use the slope formula to find the missing coordinate. You've been given all the needed information to solve this problem. So all you need to do is plug in the values and solve for the missing variable value.