a) Write the information as ordered pairs, (x, y), where x represents the age of the driver and y represents the number of drivers involved in fatal motor vehicle accidents. b) Label a coordinate system, choose an appropriate scale, and graph the ordered pairs. c) Explain the meaning of the ordered pair (18, 1800) in the context of the problem. 78) The number of pounds of potato chips consumed per person is given in the table. (U.S. Dept. of Agriculture) Year Pounds of Chips 2003 17.3 2004 16.6 2005 16.0 2006 16.2 2007 15.9 a) Write the information as ordered pairs, (x, y), where x represents the year and y represents the number of pounds of potato chips consumed per person. b) Label a coordinate system, choose an appropriate scale, and graph the ordered pairs. c) Explain the meaning of the ordered pair (2004, 16.6) in the context of the problem. 79) Horton’s Party Supplies rents a “moon jump” for $100 plus $20 per hour. This can be described by the equation y 20x + 100 where x represents the number of hours and y represents the cost. a) Complete the table of values, and write the information as ordered pairs. x y 1 3 4 6 b) Label a coordinate system, choose an appropriate scale, and graph the equation. c) Explain the meaning of the ordered pair (4, 180) in the context of the problem. d) For how many hours could a customer rent the moon jump if she had $280? Graph each equation by fi nding the intercepts and at least one other point. 43) y 2x 6 44) y x 3 45) 3x 4y 12 46) 5x 2y 10 47) x 2 3 y 8 48) x 1 4 y 1 49) x 4y 6 50) 2x 3y 6 51) y x 52) y x 53) 5y 2x 0 54) x 3y 0 55) x 5 56) y 1 57) y 0 58) x 0 59) y 3 0 60) x 5 2 0 61) x 3y 8 62) 6x y 7 63) a) What is the equation of the x-axis? b) What is the equation of the y-axis? 64) Let a and b be constants. If the lines x a and y b are graphed on the same axes, at what point will they intersect? Objective 6: Use the Midpoint Formula Find the midpoint of the line segment with the given endpoints. 65) (1, 3) and (7, 9) 66) (2, 10) and (8, 4) 67) (5, 2) and (1, 8) 68) (6, 3) and (0, 5) 69) (3, 7) and (1, 2) 70) (1, 3) and (2, 9) 71) (4, 0) and (3, 5) 72) (2, 4) and (9, 3) 73) a3 2 , 1b and a5 2 , 7 2 b 74) a9 2 , 3 2 b and a 7 2 , 5b 75) (6.2, 1.5) and (4.8, 5.7) 76) (3.7, 1.8) and (3.7, 3.6) Objective 7: Solve Applications Solve each application. 77) The number of drivers involved in fatal vehicle accidents in 2006 is given in the table. (www.census.gov) Age Number of Drivers 16 800 17 1300 18 1800 19 1900 152 CHAPTER 4 Linear Equations in Two Variables and Functions www.mhhe.com/messersmith
messersmith_power_intermediate_algebra_1e_ch4_7_10
To see the actual publication please follow the link above