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Vocabulary

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

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  1. Vocabulary Variables and Patterns

  2. Review Coordinate Graphs

  3. Plot (6, -2)

  4. Plot (-8, 2)

  5. Plot (-2, 0) and (0, -2)

  6. What are the coordinate pairs/ordered pairs for this shape?

  7. What are the coordinate pairs/ordered pairs for this shape?

  8. Coordinate Graphs

  9. 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.

  10. 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.

  11. 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.

  12. 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, ____ ?

  13. 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

  14. 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? • Answer: • 6.50 divided by 10 = 0.65 • 0.65(income) – 0.45(cost) = 0.20(profit) • 0.20(profit for 1) x 10(# sold) = $2.00 (total profit)

  15. Beginning 3.4(Copy this into your Notebook—Practice Section)

  16. Investigation 3.4 (cont.) • Complete page 41, Problem 3.4: A, B, C, & D • Work on Problem A by yourself • For B, C, & D, work with your group to complete

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