Curated OER
What is Domain?
The teacher illustrates several ways to look at what the domain is in a set of numbers. Input, output, table, graphs, and diagrams are a few of the ways in which she illustrates the meaning of domain.
Curated OER
What is the Y-Coordinate?
How are ordered pairs, coordinate points, and graphing related to each other. What is the importance of the y-coordinate? Does it matter what order you write an ordered pair in? Yes! The y-coordinate is always written second. Always! And...
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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...
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What's a Half-Plane?
When you graph an inequality on the coordinate plane you will get two half-planes. The line itself is called the boundary line. One of the halves is called the closed half-plane and the other half is called the open half-plane. How do...
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How Do You Graph a Great Than Inequality on the Coordinate Plane?
Do you know how to graph a linear equation? If you do then graphing an inequality will not be a problem for you. There are a couple of differences: is the line solid or dashed, and which half plane do you have to shade. Watch this video...
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How Do You Figure Out Whether a Boundary is a Part of the Graph of an Inequality?
Is the boundary line part of the graph of an inequality? Here's a hint: the sign of the inequality holds the answer! Are the brain cells firing up trying to figure out what that means? Watch this video as the instructor graphs the...
Curated OER
What's a Boundary?
Are you graphing an inequality? What's that dashed line called? It's called a boundary line and it is the line that separates the coordinate plane into two separate half planes.
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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...
Curated OER
How Do You Solve and Graph a Two-Step Inequality?
Approach inequalities in a new way with this video! This video gives step-by-step instruction on how to solve a two step inequality and then graph the answer. Learners could use this video as a reference as they do homework, or you might...
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How Do You Graph a Relation From a Table?
Just a couple of ways to look at some data regarding basketball free throw percentages for a specific player. Make a table and a coordinate axes graph. Plot the ordered pairs to get a nice visual to take a look at the data. Watch this...
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How Do You Graph Ordered Pairs in Each Quadrant?
Draw a graph, label your units, make a table of your given coordinates. Now plot your points, label each point as you graph it. Next identify the quadrant that each point is in and add that to your table.
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How Do You Use the Graph of a Linear Equation to Solve a Word Problem?
There are rabbits, rabbits, rabbits everywhere. Not this group of rabbits. Use a table to find some x and y values to create a graph to solve this word problem. It's a rather peculiar word problem in that it is trying to find when a...
Curated OER
What is the Vertex of a Quadratic Function?
The vertex of an upward facing parabola is the lowest point on the parabola and is called the minimum. The vertex on a downward facing parabola is the highest point on the parabola and is called the maximum. These are the two...
Curated OER
How Do You Solve a System of Inequalities by Graphing?
You've got a linear system of inequalities? You need to solve it by graphing? No sweat. Make sure that each equation is in slope-intercept form and then graph each equation. Is it a solid line or a dashed line? Which side of the line...
Curated OER
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...
Curated OER
How Do You Write a Relation from a Word Problem?
This word problem has only one set of given numbers. How does one make a graph with only one set of numbers? Make a table to get the other set of values. Now these values make ordered pairs and can be plotted on a graph.
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's the Vertical Line Test?
Is the graph of the equation a function? Use the vertical line test to answer this question. The definition states that the vertical line can pass through the graph of the line no more than one time. The teacher demonstrates exactly what...
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What is the Y-Axis?
Just a simple straightforward definition and example of what constitutes the y-axis.
Curated OER
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...
Curated OER
What is the X-Axis?
Just a simple straightforward definition and example of what constitutes the x-axis.
Curated OER
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...
Curated OER
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...
Curated OER
How Do You Graph a Rational Function by Making a Table?
Make a table to graph a rational equation. Make a list of values for x and plug them into the expression to get the y value. Then plot the ordered pairs on a graph. Hey, this graph looks funny! Something about asymptotes. Watch closely...