Curated OER
What's a Coefficient?
All variables have a coefficient. Integers, decimals, and fractions can represent coefficients, positive or negative. And there are times there is no written coefficient which means it's really just 1. This short video demonstrates and...
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How Do You Make a Scatter Plot?
So you've got some x-values and some y-values and you want to make a scatter plot. First thing is to make a table for your x and y values. Then make ordered pairs and you can plot them.
Curated OER
How Do You Use a Scatter Plot to Find a Negative Correlation?
Organize your data on a graph. Use the data, pair them up as coordinate pairs, then graph them, resulting in a scatter plot. But how, you ask? Watch this tutorial to learn the step-by-step process needed to draw a scatter plot and...
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...
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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...
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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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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...
Curated OER
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.
Curated OER
How is a Function Defined?
A function means that every element of the domain is paired with exactly one element in the range. The teacher illustrates this by using a table for the given set of numbers.
Curated OER
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.
Curated OER
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 Use Multiplication With Positive Numbers to Solve an Inequality Problem?
Broken lights at the skating rink? Are there enough not broken to be able to see well enough to skate? Set up this real-world word problem and find the total number of lights in the skating rink. Two given values and one variable. Solve...
Curated OER
How Do You Use Multiplication with Negative Numbers to Solve an Inequality Word Problem?
Solve this real world word problem in just one written step. The original inequality is a division problem, so to solve it, use the multiplication property of inequality. Was the problem solved by multiplying a negative number? Yes! So...
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How Do You Solve an Inequality by Multiplying by a Positive Number?
Instruct your pupils on solving inequalities by multiplying by positive numbers with this video. The video presents how to do just this in step-by-step fashion. A straightforward video, this could be used to supplement your lesson during...
Curated OER
How Do You Use Division With Positive Numbers to Solve an Inequality Word Problem?
A word problem with one variable and two given numbers. This word problem seems doable from the start. Wait, it's an inequality. Don't worry about that piece, just get the expression written and do the math. Watch this video and see how...
Curated OER
How Do You Use Division With Negative Numbers to Solve an Inequality Word Problem?
A word problem that needs to be written as an inequality to solve. This expression seems pretty straightforward and only takes one step to solve. But wait, the division property was used with a negative number so the inequality sign has...
Curated OER
How Do You Solve an Inequality by Dividing by a Positive Number?
Is your class working on inequalities? If so, you might be interested in this video. This well-made video shows how to solve an inequality by dividing by a positive number. An instructor details each step, writing out her work as she...
Curated OER
How Do You Use Subtraction to Solve an Inequality Word Problem?
Don't be afraid of this word problem because it has an inequality. There is only one variable and this inequality can be solved in one step. It's pretty straightforward.
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How Do You Use Addition to Solve an Inequality Word Problem?
Word problems. Inequalities. Money. What? Does Marissa have enough money left in her bank account to go to the movies? One variable, two given amounts. Set up this inequality to determine how much Marissa needs to have in her bank...
Curated OER
What's the Addition Property of Inequality?
The addition property of inequality is just like the addition property of equality. They each state that whatever is added to one side of the equation or inequality must be added to the other side. Watch this video and see how the...
Curated OER
How Do You Solve an Inequality Using Addition?
Use the addition property of inequality to solve this problem. It's just a one step solution and then the instructor shows how to write the answer in set builder notation.