Curated OER
How Do You Determine if a Graph Represents a Linear, Exponential, or Quadratic Function?
What does the graph of a linear equation look like? How about a graph of a quadratic equation? What does a graph of an exponential function look like? Watch this video and see as the instructor illustrates and explains each of these...
Curated OER
How Do You Determine if the Vertex of a Quadratic Function Will be a Maximum or Minimum?
The form of a quadratic function can help you determine if the vertex of a quadratic equation will be a minimum or a maximum of the function. If the coefficient of 'a' in the quadratic form of the equation is positive the vertex will be...
Curated OER
How Do You Find the Vertex of a Quadratic Function?
Trying to find the vertex of a quadratic equation? Remember that the vertex is the minimum or maximum point of the quadratic equation and can be identified on a graph of the equation. First use the axis of symmetry formula to find the...
Curated OER
What is a Parabola?
What do you get when you graph a quadratic function? Not a line, that's the graph of a linear equation. The graph of a quadratic function is a curved line, either opening upward like a smile, or opening downward like a frown. The...
Curated OER
How Do You Graph a Quadratic Function?
What things need to be done to graph a quadratic function? Well, first, find the axis of symmetry, then find the vertex of the parabola, then create a table and plug in some x-values to get the resulting y-values. Now write the values as...
Curated OER
How Do You Solve a Quadratic Equation with Two Solutions by Graphing?
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...
Curated OER
What is Numerical, or Quantitative, Data?
The teacher gives a very thorough explanation of numerical or quantitative data being anything where the answer to a question would be a number. Whereas any other answer might be considered categorical. She shows several different ways...
Curated OER
How Do You Write an Equation of the Line in Slope-Intercept Form If You Have a Graph?
An equation can be gotten from the graph of a line. Yes, it can. Watch this video and follow the instructor as she goes step-by-step explaining and illustrating how to get an equation from information from the graph of a line.
Curated OER
What's Negative Correlation?
If the y-value decreases as the x-value increases then you have a negative correlation. Meaning that the line-of-fit has a negative slope.
Curated OER
How Do You Use a Scatter Plot to Find a Line of Fit?
What is a line-of-fit? Given a data set, plot the ordered pairs on a graph. It looks like a scatter plot. Now estimate, and draw a line that best fits what the data represents. That is your line-of-fit.
Curated OER
What Are Vertical Lines?
What does the graph of a vertical line look like? Well, it is a line that is straight up and down. What does the equation of a vertical line look like? So what kind of slope does a vertical line represent? Does the equation of a vertical...
Curated OER
How Do You Graph an Exponential Function Using a Table?
One way to get values to be able to graph an exponential function is to make a table. This seems pretty straightforward. Set up a table to plug in random values for x. Then put those values into the equation to get the y-values. These...
Curated OER
How Do You Graph the Intersection of Two Inequalities?
Intersection. Isn't that where paths cross? And so it is in math also. Observe the teacher as she draws a number line and plots two inequalities on it. She then explains how to get the intersection of these two lines. Then she draws...
Curated OER
Scatter Plots and Trends - Math Help
Introduce learners to the use and function of a scatter plot. Using the example of a how many traffic tickets a woman received in a ten year period, the tutor explains how to create the scatter plot, label the x and y axis, and plot...
Curated OER
What are the Endpoints of a Line Segment?
A simple video on how to identify the endpoints of a line segment. Have your class watch this video to clarify any confusions about endpoints. This could be used as extra help for learners who are having difficulty, or as a supplement to...
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.
Virtual Nerd
What's Positive Correlation?
If the y-value increases as the x-value increases then you have a positive correlation. Meaning that the line-of-fit has a positive slope.
Curated OER
What's Negative Correlation?
If the y-value decreases as the x-value increases then you have a negative correlation. Meaning that the line-of-fit has a negative slope.
Curated OER
How Do You Use a Scatter Plot to Find a Line of Fit?
What is a line-of-fit? Given a data set, plot the ordered pairs on a graph. It looks like a scatter plot. Now estimate, and draw a line that best fits what the data represents. That is your line-of-fit.
Curated OER
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...
Curated OER
How Do You Use a Graph to Translate a Figure Vertically?
Transformations. Learn a little bit of geometry. See how to translate a geometric figure on a coordinate plane vertically by sliding it over. Simply pick a point on the figure and count the units you want to move it. Then repeat that for...
Curated OER
How Do You Use a Graph to Translate a Figure Horizontally?
Transformations. Learn a little bit of geometry. See how to translate a geometric figure on a coordinate plane horizontally by sliding it over. Simply pick a point on the figure and count the units you want to move it. Then repeat that...
Virtual Nerd
How Do You Use a Graph to Reflect a Figure Over the Y-Axis?
A reflection is just what you think it is, a mirror image. So how do you reflect a figure on a graph? Just flip it over. The teacher illustrates how to select a line of reflection (the y-axis) and make the calculations to flip the figure.
Virtual Nerd
What is the Range of a Relation?
The teacher illustrates several ways to look at what the range is in a set of numbers. Input, output, stem and plot table, graphs, and diagrams are a few of the ways in which she illustrates the meaning of range.