Curated OER
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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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 Determine if an Ordered Pair is a Solution to a Linear Inequality?
Check to see if a given ordered pair is a solution to an inequality. Just plug the given values into the given inequality and do the math. If the resulting statement is true then the given ordered pair is a solution. If the statement is...
Curated OER
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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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 Use Coordinates to Translate a Figure Vertically?
Transform the figure six units vertically down. Use the given coordinate points to translate by subtracting 6 from each of the given y-values. Then plot the new coordinates points and connect the dots.
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How Do You Use Coordinates to Translate a Figure Horizontally?
There are many ways to transform a figure on a coordinate plane. This problem requires the movement to be four units horizontally to the right. Using the original coordinate pairs, a positive 4 can be added to each x-value to get the new...
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How Do You Use a Graph to Translate a Figure Diagonally?
This presentation is pretty straightforward in illustrating how to translate a figure on the coordinate plane. Watch the instructor follow the directions to translate the figure four units to the right and six units down.
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How Do You Use Coordinates to Reflect a Figure Over the Y-Axis?
Perform a reflection of a figure over the y-axis. This seems pretty straightforward. But also learn how to use the coordinates to reflect a figure.
Curated OER
How Do You Use Coordinates to Reflect a Figure Over the X-Axis?
Perform a reflection of a figure over the x-axis. This seems pretty straightforward. But also learn how to use the coordinates to reflect a figure.
Curated OER
What is a Plane?
It's a bird, it's a plane, it's Superman. No, it's really a plane. A plane is named by identifying three points with the exception that they do not form a straight line. A plane can also be identified by a single letter naming it. The...
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How Do You Determine if an Ordered Pair is a Solution to an Equation?
There are several ways to determine if an ordered pair is the solution to a linear equation. The ordered pair can be plugged in to the equation to check if it's a solution. However, in this video the instructor sets up a table and plugs...
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What is a Line of Reflection?
Line of reflection is basically a geometry term used in the transformation of figures. It identifies the line on the graph that you reflect a figure over. The line can be vertical, horizontal, and diagonal. Actually, it can be any line...
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How Do You Make a Figure Larger Using a Dilation?
A dilation increases or decreases the size of a figure. In this lesson the teacher shows you how to use a scale factor of three to dilate the given figure. She identifies the ordered pairs, multiplies them by three, plots the new...
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What Does the Constant 'h' do in y = |x-h|?
Translating the graph of an absolute value equation horizontally based on the value of a constant, seems to be a big task. That sentence was a mouthful. So what does it all mean? Click on this video to observe the instructor illustrate...
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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 Make a Table for a Quadratic Function?
Making a table for a quadratic function is not so complicated. Here are a few tricks to make it easier. One trick is to find the axis of symmetry and another is to find the vertex. These two values can be used to pick values to plug in...
Curated OER
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's a Solution to a System of Linear Equations?
Since the focus of this video is on explaining the solution to a system of equations, the lecturer does not work through the problem. Instead, she points out that the solution should be an ordered pair that makes each equation a true...
Curated OER
How Do You Graph a Line If You're Given the Slope and the Intercept?
You have been given the value for the y-intercept and the slope of a line. Now you have to graph it. So draw a graph, plot your y-intercept and then count out your movement for slope. Don't forget to connect the dots and draw a line...
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How Do You Solve a System of Equations Using the Elimination by Addition Method?
How can a value of x and y satisfy a solution to two equations? It doesn't seem possible. Given a system of linear equation, find a solution that satisfies both equations. It can be done. In this video, the instructor demonstrates how to...
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What is a Relation?
A very short explanation of what makes a relation: a set of ordered pairs.
Curated OER
What is an Ordered Pair?
An ordered pair is comprised of an x-value, and a y-value. The x-value always comes first, then the y-value in an ordered pair. This ordered pair represents a point on a coordinate plane. There are many meanings of an ordered pair and...
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What is the Coordinate Plane?
Just a quick diagram and explanation of the parts of the coordinate plane. You might want to remind your class to put arrows on the ends of the x-axis and the y-axis, as these lines go on forever.