Solution Sets for Systems of Equations
A system of two linear equations can have no points in common (parallel); one point at which they intersect, or an infinite number of solutions.
Practical Problem: Shelf Space
Using the substitution method with a system of equations to solve a practical problem involving use of shelf space.
Number Line, The: Graphs and Co-ordinates
This clip explains that the point associated with a number is called its graph, while the number itself is called the coordinate.
Interpreting Graphs: Examples of Circle Graphs
This clip explores circle graphs in depth. It explains that each part of these graphs is called a sector. The clip explains that the sum of the values in the graph must equal 100%, then provides practical problems, including one in which the value o...
Interpreting Graphs: Examples of Bar Graphs
This clip explores bar graphs in depth, explaining that each bar represents discrete data. The clip also reminds the student that, "
we'll often have to estimate amounts in bar graphs. Remember, the purpose of a graph is to provide a visual image o...
Interpreting Graphs: Introduction to Graphs: Circle, Bar and Line Graphs
This clip introduces graphs as the most visual way to present data, then defines circle, bar and line graphs.
Interpreting Graphs: Examples of Line Graphs
This clip explores line graphs in depth, explaining that they show data as continuous values. The clip includes examples of line graphs illustrating automobile speed, temperature readings, and semiconductor sales.
Interpreting Graphs: Effects of Vertical Scale on Graphs, The
This clip explains that two graphs displaying the same data can give very different visual impressions. "That's why it's important to check the vertical scale of a graph before making an interpretation," the clip states.
Signed Numbers: Introducing Negative Numbers
This clip uses the number line to illustrate that there can be negative numbers as well as positive numbers. Negative numbers on the number line are located to the left of the zero, rather than to the right.
Communicating with Graphs and Charts
The advantages of visual representation of statistical data and how this can work to a business's advantage in reporting and marketing.