QUARTER 1- MODULE 1: WEEK 1 & 2 hat I Know et us check how much you know about functions and their graphs. Direction: Choose the letter of the best answer and write this on your answer sheet. 1) Given f(x) = 2x-5 & g(x) = 3x + 4, solve for (g o D). a 11- 6x b. 62-7x - 20 2) Giver: y = 3x + 7, what is f(-2)? C. 6x - 11 d. 6x2 - 23x- 20 C. -13 d. 13 a. -1 b. The composite function denoted by fo g is defined as a. (f g)(x) 3 f(g(x)) b. ( g)(x) = g(f(x)) It is a set of ordered pairs (x, y) such that no two ordered pairs have the same x-value but different y-values a relation b function 5) What is the domain of the equation y = 3x2 -4x? c. (fog)(x) =f(x)•g(x) d. (fog)(x) g(x)•f(x) C. domain d. range {x:x E R,x < -1} b. (x.x ER,x # 1} 6) Giver f(x) = 2x-5 & g (x) = 3x + 4, find (f g)(x). c. [x:x E R} d. (x:x ER, x 2 4} a. 12+ 23x - 20 6x2 - 23x - 20 c. 6x? - 20 d. 6x - 7x - 20 a b. )If f(x) x+7 & g(x)%= 2x-3, what is (f-g)(x)? ート4 C.x-4 d. 10 + 3x When u.viding two fractions or rational expressions, multiply the dividend with the C. abscissa d. Theorem a. b. 10 - x of the divisor a. reciprocal b. addend 3) What is the set of all possible values that the variable x can take in a relation? domain c. equation a. b. rarige d. function 10) Which of the following set of ordered pairs in NOT a function? c. (1, 1), (2, 2), (3, 3), (4, 4) d. (3, 2), (4, 2), (5, 2), (6, 2) 2), (2,3), (3,4), (4,5) 2). (1,3), (3,6), (4,8 a. b. ESSON 1 REPRESENTATIONS OF FUNCTIONS AND RELATIONS Her. you'll learn how to interpret situations that occur in everyday life and use functions to represent 06m. You'l also use these functions to answer questions that come up. What if your bank charged a monthly fee of $15 for your checking account and also charged S0 10 for ch check written? How would you represent this scenario with a function? Also, what if you could only afford spend $20 a month on fees? Could you use your function to find out how many checks you could write per nonth? In this Concept, you'll learn how to handle situations like these by using functions. How can challenging problems involving functions be analyzed and solved? tet's answer these question by doing the activities below. ctivity Pictures Analysis (eliciting prior knowledge, Motivation, Hook) bservee pictures below and answer the questions