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# Alg 1 sections 1.5-1.6

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### Alg 1 sections 1.5-1.6

1. 1. Represent Functions as Rules and Tables Section 1.6
2. 2. Functions • y = 8000xx yy = 8000x
3. 3. Functions Input Function Output Domain Range x yy = 8000x
4. 4. Functions Other ways to represent functions. • Table • Mapping Diagrams Input Output Input (liters) 1 5 12 15 Output (wons) 2000 10,000 24,000 30,000 1 2 3 5 0 1 2
5. 5. Function or Not 1 3 5 0 1 2
6. 6. Use a Problem Solving Plan • Read and understand the problem. • Take notes. • Make a plan. • Solve the problem. • Check your answer.
7. 7. Strategies •
8. 8. Strategies Formula • The driving distance between Daegu and Seoul is about 295 km. If you drive this trip in a total of 3.5 hours, what is your average speed? Round to the nearest km. • 84 km/hour
9. 9. Strategies • Patterns • This table shows the height h of a paramotorist t minutes after beginning a descent. Find the height after 7 minutes. Time (min) t 0 1 2 3 4 Height (ft), h 2000 1750 1500 1250 1000
10. 10. Strategies Draw • You want to tape five posters on a wall so that the spaces between posters are the same. You also want the spaces at the left and the right of the group of the posters to be three times the space between any two adjacent posters. The wall is 15 feet wide and the posters are 1.5 feet wide. • Draw a diagram and then write and solve an equation to find how to position the posters.
11. 11. Formulas •
12. 12. Homework • Pages 31-32 #8-10 all, 14-19 all • Pages 38-39 #3-7 all, 14-21 all