Curated OER
How Do You Find the Domain and Range of the Inverse of a Relation?
Finding the domain and range of the inverse of a relation can be tricky, unless you know the correct steps! It's not that complicated. Watch this video and see how the instructor does the inverse of a relation before writing the domain...
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What's a Solution Set?
A solution set is the set of ordered pairs that are the solutions to a two variable problem. Not sure what all that means? Watch this video and the teacher will explain it clearly.
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How Do You Make a Table of Values for a Linear Equation?
Create a table of values based on a given linear equation. Input, output, function. Watch this video and learn how to set up a table to get coordinate points to make a graph of an equation. Make a column of selected x-values. Make a...
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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.
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How Do You Figure Out If a Relation is a Function?
If a relation is to be considered a function then the values in the domain can only appear once in the table. It does not matter how many times a value appears in the range. Set up a table using the given values to check and see if the...
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What is the Y-Axis?
Just a simple straightforward definition and example of what constitutes the y-axis.
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What is the X-Coordinate?
How are ordered pairs, coordinate points, and graphing related to each other? What is the importance of the x-coordinate? Does it matter what order you write an ordered pair in? Yes! The x-coordinate is always written first. Always! And...
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What is the X-Axis?
Just a simple straightforward definition and example of what constitutes the x-axis.
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What is the Origin?
This tutorial defines the origin on the coordinate plane. Watch to find out what the origin is and how it can be used as a reference point to locate other points on a graph.
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Why Is It Called an Ordered Pair?
Order is important! An ordered pair is comprised of an x-value, and a y-value. The x-value always comes first. This ordered pair represents a point on a coordinate plane. If the order of the x-value and the y-value are switched then they...
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What are Quadrants in the Coordinate Plane?
The teacher diagrams a coordinate plane and identifies the four quadrants. He labels the quadrants with numbers. Then he illustrates a table to identify the positive or negative value of the x-coordinate and the y-coordinate and...
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How Do You Plot Points in the Coordinate Plane?
So you have an ordered pair and you want to graph it. Just remember that the first value is plotted along the x-axis and the second value in the pair is plotted along the y-axis. So count left or right, then up or down and you have...
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What Is the Distance Formula?
Find the distance between two points on a coordinate plane. How is that done? Let's take a look at the distance formula. What's the distance formula? Well, it's a form of the Pythagorean Theorem. How? Watch the instructor diagram and...
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How Do You Find the Zeros of a Quadratic Function on a Graph?
Find the zeros on a given graph of a quadratic equation. What does this mean? It means to find the values at which the parabola crosses the x-axis. It seems pretty straightforward to be able to look at a graph and identify the points at...
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How Do You Graph a Quadratic Equation with No Solution?
There are many ways to solve a quadratic equation. Let's check out how to solve a quadratic equation by graphing. But first, let's find the axis of symmetry and the vertex before making a table of values. Write the values as ordered...
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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.
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What's Slope-Intercept Form of a Linear Equation?
A clear introduction to slope-intercept form, this would be helpful for learners who are struggling with this concept. You might also provide this instructional video for class members to use as they work on homework or class work. A...
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How Do You Graph a Vertical Line?
Draw a graph, label the units, plot the given point, then draw a straight line up and down through the given point. That is now the graph of a vertical line through a given point.
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How Do You Write an Equation for a Horizontal Line?
Trying to write the equation for a horizontal line given an ordered pair? Just keep in mind that a horizontal line is all about the y value in the ordered pair. Plain and simple! Whatever the y value is in the ordered pair becomes the...
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Graphing Systems of Equations - Algebra Help
One way to solve a system of equations is to graph two equations and find the point of intersection. This method is demonstrated on a whiteboard to help your mathematicians understand the concept. An easy way to check your solution is...
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How Do You Solve a System of Equations Using the Substitution Method?
Watch this video to learn how to find the solution to a system of equations with the substitution method! A teacher will lead you through each step necessary, explaining her steps and the reasoning behind her decisions. After watching...
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What is a Linear Equation?
Explore linear equations with this video about lines with equal signs! The instructor demonstrates linear equations in a variety of ways: writing examples, plugging in solutions, and graphing equations. This resource could act as an...
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How Do You Graph a Quadratic Equation in Intercept Form?
Watch this video and find out how to graph a quadratic equation when it's in intercept form! After going through the different forms of quadratic equations, an instructor leads viewers through an example problem. For the example problem,...
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How Do You Rotate a Figure 90 Degrees Clockwise Around the Origin?
Show your class how to rotate a figure 90 degrees clockwise around the origin of a coordinate plane. The lecturer in this video explains the concepts and steps involved in reflecting a figure across the y-axis. Consider providing this...