Graded Assignment MTH302A: Algebra II | Unit 2 | Lesson 11: Linear Equations and Systems Unit Test Name: Date: Graded Assignment Unit 2 Test, Part 2: Linear Equations and Systems Answer the questions below. When you have finished, submit this assignment to in the course dropbox. YOU MUST SHOW ALL WORK TO RECEIVE FULL CREDIT. THIS IS NON-NEGOTIABLE (10 points) The table gives the average weights in kg of girls from birth to age 10. Score Age 0 (birth) 1 2 3 4 5 6 7 8 9 10 Weight (kg) 4.4 9.1 11.3 13.6 15.0 17.2 20.4 22.2 25.4 28.1 31.3 a.) Make a scatter plot of the data, draw a line of best fit, and then find the equation of the line of best fit. Show and explain your work. b.) Describe what the slope of the line of best fit represents. c.) Use the equation to predict the average weight in kg of 14-year-old girls. Show your work. Answer: 2012, 2009 K12 Inc. All rights reserved. Copying or distributing without K12's written consent is prohibited. Page 1 of 3 Graded Assignment MTH302A: Algebra II | Unit 2 | Lesson 11: Linear Equations and Systems Unit Test 2012, 2009 K12 Inc. All rights reserved. Copying or distributing without K12's written consent is prohibited. Page 2 of 3 Graded Assignment MTH302A: Algebra II | Unit 2 | Lesson 11: Linear Equations and Systems Unit Test (10 points) For her chemistry experiment, Marisol needs 2 liters of a 50% alcohol solution. The lab has two containers, one with 40% alcohol solution and the other with 80% alcohol solution. Score a.) Write a system of linear equations that you can use to determine how many liters of each type of alcohol solution Marisol should combine to get 2 liters of a 50% alcohol solution. Be sure to define your variables. b.) Solve the system and determine how many liters of each type of alcohol solution Marisol should combine. Show all your work. Answer: Your Score 2012, 2009 K12 Inc. All rights reserved. Copying or distributing without K12's written consent is prohibited. ___ of 20 Page 3 of 3