Curated OER
Exploring Linear Relationships
In this video, we create an equation and graph to show a linear relationship based on the word problem. This is good example for algebra and pre-algebra learners to help gain an understanding of creating equations, and graphing...
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What's the X-Intercept?
In a linear equation, the x-intercept is really just the point where the graph of the line crosses the x-axis.
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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...
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How Do You Find the X- and Y-Intercepts of a Line If You Have a Graph?
The x-intercept is the point at which the line of the equation crosses the x-axis. The y-intercept is the point at which the line of the same equation crosses the y-axis. It's as easy as that. Look at your graph and note these locations.
Curated OER
How Do You Find the X- and Y-Intercepts of a Line If You Have a Graph?
The x-intercept is the point at which the line of the equation crosses the x-axis. The y-intercept is the point at which the line of the same equation crosses the y-axis. It's as easy as that. Look at your graph and note these locations.
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How Do You Solve and Graph Inequalities from a Word Problem?
Are you befuddled after reading this word problem? Not only is it a word problem but there are two variables, and not only does it have two variables, but it is an inequality. Don't pull your hair out! Take a deep breath and watch this...
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How Do You Find the Rate of Change Between Two Points on a Graph?
The instructor uses a graph representing time and distance to illustrate how to solve this word problem. She explains each step: rate of change, distance, time, vertical change over horizontal change, change in distance, and change in...
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How Do You Solve Two Equations with Two Variables?
Two equations, two unknown variables. Use the substitution method to solve for one of the variables. Then plug that value into one of the equations to solve for the other variable. Finally plug both values into one of the original...
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How Do You Find the Y-Intercept of a Line If You Have Another Point and the Slope?
Looking to teach your class how to find the y-intercept of a line using another point and the slope? Consider this video as an instructional tool. Learners can watch as a lecturer demonstrates how to find the y-intercept, using the...
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How Do You Find the Y-Intercept of a Line If You Have Another Point and the Slope?
Looking to teach your class how to find the y-intercept of a line using another point and the slope? Consider this video as an instructional tool. Learners can watch as a lecturer demonstrates how to find the y-intercept, using the...
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How Do You Write and Use a Prediction Equation?
Goodness! There are a lot of steps in getting to the final solution in this word problem. Watch this video and follow along as the instructor explains each and every step. There's a scatter plot, a line of fit, writing an equation based...
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How Do You Find the X- and Y-Intercepts of a Line in Slope-Intercept From?
Find the x and y intercepts in a given linear equation written in slope intercept form. Piece of cake! There are just two things to do. First, substitute 0 for x and solve to find the y-value. Then substitute 0 for y to find the value of...
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How Do You Use the Vertical Line Test to Figure Out if a Graph is a Function?
How does the vertical line test help you decide if the graph of an equation is a function? The instructor draws a graph and then draws the line of the equation. She demonstrates how to use the vertical line test to determine if the graph...
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How Do You Solve an OR Compound Inequality and Graph It On a Number Line?
Go over how to solve a compound inequality and graph it with this video. The video is clear and concise. A lecturer solves a compound inequality and graphs it on the spot, explaining each operation in detail. Great for in-class or...
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What is a Linear Inequality?
What makes an expression an inequality? Well, it would be considered an inequality if the expression has a greater than symbol, a less than symbol, a greater than or equal to symbol, or a less than or equal to symbol. This would mean...
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How Do You Find the Slope of a Ramp If You Know the Rise and Run?
Do you know the formula for slope? Yes, rise over run. Then all you have to do is plug in the given values and solve for the slope of the ramp.
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What Does Direct Variation Look Like on a Graph?
In a graph of a direct variation, the line must pass through the origin, (0,0). See the teacher illustrate what that looks like on a graph.
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What is a Quadratic Function?
This is an introductory video on how to identify a quadratic function. This video explains what a quadratic function is and what the graph of a quadratic function looks like. The instructor goes through 4 examples of quadratic functions...
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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...
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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 2 different lines to demonstrate slope. A practical introductory video for classes that are just...
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What Does the Constant 'k' do in y = |x|+k?
How do you translate absolute value equations vertically? What's a parent equation? What is a constant k in an equation? How does the value of the constant k change the graph of the equation vertically? So many questions. Watch as the...
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What's a Function?
There are many ways to represent a function. The main idea though is that for every input there is an output. Watch this video as the instructor illustrates and explains several different ways to show a function. She demonstrates domain...
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What Does Positive Slope Mean?
How can two negative values create a positive slope? Rise over run, a negative divided by a negative. Watch the instructor explain just how that works.