When it is 80 degrees he will sell about 42 ice creams.
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1 What are some of the ways Functions are represented? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Week 4, Lesson 1 1. Warm up 2. Functions 3. ICA 4. Homework Functions What are some of the ways Functions are represented? 33 Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up: A shopkeeper recorded daily ice cream sales along with the temperature. The results are below. Using the regression line, estimate the number of sales when it is 80 degrees. When it is 80 degrees he will sell about 42 ice creams. 1
2 Important Vocabulary Know Math Studies 2 Need to Know Unit 6 Functions
3 6 Week Study Guide Math Studies 2 Show Your Work
4 Standard 6.1 Parent Functions Functions When dealing with functions, we can determine the general shape and direction by looking at the largest exponent A parent function is the basic function with no changes made to it. Linear quadratic Example 1 Intersecting Functions Calculate the exact x value where the following functions are equal Calculator ( 1,2) and (5,2) 1 and 5 Graph Shift One function goes into Y1 G Solve: F5 The other into Y2 Intersection Draw Example 2 Intersections of Functions Given the following 2 functions, what is the most number of intersections possible? On your calculator, find the exact intersections of f(x) and g(x) ( 2.5,8) and (3, 25) Example 3 Function Notation In certain examples, we do not only use f(x) and g(x) Here are examples of different style notations C(n) s(t) a(t) h(t) Cost according to number of items Position according to time Acceleration according to time Height according to time Cost Analysis Company A can manufacture a product according to the function A(n) =.5(n+4) Company B can manufacture the same product according to the function B(n) = 15n After creating how many products will the two companies cost the same? amount Cost When both companies produce 26 products they have the same cost of $457. 4
5 QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ At a horse race, Shadow's distance ran (meters) can be tracked according to the function S(t) = 22t. Another horse Ghost's distance ran (meters) can be tracked according to the function G(t) =.5t 2. How many seconds will it take Ghost to catch Shadow? 5
6 What is the difference between domain and range? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Week 4, Lesson 2 1. Warm up 2. Domain and Range 3. ICA 4. Homework Domain and Range What is the difference between domain and range? 35 Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up: The data below is analyzing the monthly salary for a high school math teacher Dollars 1. What percent of teachers make between $450 and $500 per month? NormCD(Lower, Higher, SD, Mean) 2. If $480 is the required amount of money to pay bills each month, what percent of teachers cannot pay their bills? NormCD(Lower, Higher, SD, Mean) (0,479.99, 28,472) 61.2% 6
7 Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Standard 6.1 Domain and Range Domain The set of all possible input values (x values) that allow a function to work You can find domain on a graph by finding which x values have any corresponding y value Example 1 Find the domain from the following graph Example 2 Find the domain from the following graph Example 3 Find the domain from the following graph Range The set of all possible output values (y values) that are a result from the x values You can find domain on a graph by finding which y values the graph will eventually reach Example 4 Find the range from the following graph Example 5 Find the range from the following graph Example 6 Find the range from the following graph 7
8 ity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity Match the functions to their correct domains, then to their correct ranges 8
9 What does the domain tell us? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Week 4, Lesson 3 1. Warm up 2. Domain Rules 3. ICA 4. Homework Domain Rules What does the domain tell us? 37 Warm up: A researcher does a x 2 test of independence discovers that the p value from her test is 5.5 x What should her conclusion say? 9
10 Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Standard 6.1 Domain Rules In your calculator, enter in the following problems: Error Error 1st Rule of Domain The only final total allowed inside of a square root is zero or greater Example 1 Which values for x ARE allowed under this square root? Which values for x ARE NOT allowed under this square root? Example 2 Which values for x ARE allowed under this square root? x -10-2x-20 = x = 20-2 = -2 x = -10 Which values for x ARE NOT allowed under this square root? x
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14 Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Domain Rules In your calculator, enter in the following problems: error error error 2nd Rule of Domain The bottom of a fraction CANNOT equal zero Example 3 Which values for x ARE allowed on the bottom of this fraction? anything but -5 x+5 = x = -5 Which values for x ARE NOT allowed on the bottom of this fraction? -5 Example 4 x 3-8 = x 3 = 8 Which values for x ARE allowed on the bottom of this fraction? anything but 2 Which values for x ARE NOT allowed on the bottom of this fraction? 2 Summary: 14
15 ity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity Match the expressions to the appropriate values of x. 15
16 QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ QUIZ Quiz Question Find the domain of the following function: 16
17 Why is domain not always "all real numbers"? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Week 4, Lesson 4 1. Warm up 2. Domain of Functions 3. ICA Domain of Functions Why is domain not always "all real numbers"? 39 Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up Warm up: 6 3 What is the domain and range of the following functions? Domain: Range: 1 6 Domain: Range: 17
18 Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Standard 6.1 Domain of a Function Domain of a Function To find domain of a function, apply the rules we learned yesterday about square roots and fractions The domain will be the x values that ARE allowed Example 1 Find the domain of f(x) ax 2 +bx+c= 0 x 2 36= 0 Example 2 Domain: Find the domain of t(x) Example 3 Domain: Find the domain of b(x) ax 2 +bx+c= 0 x 2 x 12= 0 Domain: 18
19 Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Notes Domain of a Function Domain of a Function Another option, you can plug the function into your calculator and look at the graph. Only use this as a last resort Example 4 Find the domain of r(s) domain: Example 5 Find the domain of w(p) domain: x 5 x 5 Example 6 Find the domain of f(x) Summary: 19
20 ity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity ICA: In Class Activity Match the function to the proper domain, then to the graph. 20
Week 1, Lesson 2 1. Warm up 2. Notes Quadratics 3. ICA Physics Rocket
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