Vocabulary

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# Vocabulary - PowerPoint PPT Presentation

Vocabulary . Variables and Patterns. Review Coordinate Graphs. Plot (6, -2). Plot (-8, 2). Plot (-2, 0) and (0, -2). What are the coordinate pairs/ordered pairs for this shape?. What are the coordinate pairs/ordered pairs for this shape?. Coordinate Graphs. Basic Terms.

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### Vocabulary

Variables and Patterns

Basic Terms
• Variable: A quantity (something that can be measured) that can change.
• Ex. Weight is a variable because the weight of something can change. Time is a variable because it can be measured and it changes.
• Name five things in your life that are variables.
Basic Terms (cont.)
• Relationship: The connection between two or more variables. There are three types of relationships:
• Positive—as one variable increases, the other variable increases (and vice versa)
• The more hours Shay practices basketball, the more points she scores in her games.
• Negative—as one variable increases, the other variable decreases (and vice versa)
• Ex. The more hours you spend watching tv, the less amount of sleep you get each night.
• No Relationship—as one variable increases, the other variable stays the same
• No matter what time grandma goes to the movies, she pays the same amount to purchase a ticket.
Basic Terms (cont.)
• Table: A way to organize two or more variables that are related. A table can help show you see constant changes and make predicts about the variables.
Basic Terms (cont.)
• Pattern: A change that happens in a constant/consistent/predictable way.
• Ex. #1 Can you predict what the next shape should be?
• Ex. #2 Can you predict what the next number show be?

2, 5, 8, 11, ____

?

Review of 3.3
• What is an expense/cost?
• The amount a person spends on supplies, materials, etc.
• What is income?
• The amount paid by the customer
• What is profit?
• The difference (subtraction) between the income and expense/cost. The extra money you have after paying all of your expenses.

Income – Expense/Cost = Profit

Review of 3.3 (cont.)
• You need to figure out what the income and expense/cost is for one item in order to determine the profit.
• Example: Ten candy bars are sold for \$6.50. Each candy bar costs \$0.45 to make. How much profit is made after selling the 10 candy bars?