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Name: Kelly DeNu Lesson Title: Pre-Test/Post-Test Activity Title: Pre-Test/Post-Test Worksheet Title: Pre-Test/Post-Test Contact Info: [email protected] Unit #: 1 Lesson #: Date:01-Jul-13 Activity #: Worksheet: a Submarine Rescue Using Systems Post-Test Name:__________________________________________________________Date:_______________ Please circle the correct answer to the following questions: 1. What is the density of an object if the mass is 60 ML and the volume is 20 Liters? a. 2. 3 g/l b. 30 g/l c. 0.03 g/l d. 3000 g/l If something floats in water, what can be done to make it sink? a. Add something to make the density greater than 1. b. Take something away to make the density greater than 1. c. Add something to make the density less than 1. 3. Determine which point is a solution to this system of equations: y = 3x a. and (-2,5) y = 5x -4 b. (2, 6) c. ( 4, 3) d. (3, 1) 4. Determine which point is a solution to this system of equations: -2x + y = -3 a. (1, -1) and b. (2, 3) y=x–2 c. (-2, -3) d. (2, 1) 5. Which table shows a solution for y = 3x – 1 and y = 2x + 1 6. What is the solution to this system of equations on the graph? a. 2 miles and $5 b. 0 miles and $5 c. 0 miles and $2 d. 3 miles and $8 2 Submarine Rescue Using Systems Post-Test 7. Two equations are shown below: y = 3x + 2 and -2x + y = 3 In your answer document, determine the solution/point of intersection algebraically. Be sure to show each step. 1 point for all work/steps shown algebraically 1 point for the correct intersection point listed (x,y) 8. What is the solution to this system of equations?----> a. (0, 0) b. (2, 1) c. No Solution d. Infinite Solutions 9. A submarine that is on the ocean floor (500 meters down) and ascends at a rate of 5 meters per second has an equation that can be written as: a. Y = -5x + 500 b. y = 5x + 500 c. y = 5x – 500 d. y = -5x – 500 10. A submarine with an equation of y = -5x descends to rescue a scuba diver who is ascending towards the ocean surface with an equation of y = 2x – 200. What is their point of intersection? a. (28, -142) b. (66, -330) c. (30, -125) d. (-28, 142) 11. T-shirt company A charges $4.00 per t-shirt plus an initial fee of $9.00. T-shirt company B has no initial fee but charges $7.00 per shirt. After how many t-shirts will it be the exact same cost for company A and company B? In your answer document, write an equation for each company. Visually represent each company in a graph. Determine the point of intersection. Describe a situation in which it would be best to go with company A in comparison to company B. 3 Submarine Rescue Using Systems Post-Test Name:_________________________________________________________ *I Can Statements* Unit 4: System of Equations I Can Statement Science EE8.A EE8.B EE8.C Density – Science Understand that solutions to a system of two linear equations in two variables correspond to points of intersection of their graphs, because points of intersection satisfy both equations simultaneously. Solve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations. Solve simple cases by inspection. Solve real-world and mathematical problems leading to two linear equations in two variables. Question Numbers Pre-Test # Correct 1, 2 6,7,8 ___/2 ___/3 3,4,5 9, 10, 11 ___/3 ___/3 Question Numbers 1, 2 ___/2 6,7,8 (#7 ER) ___/4 3, 4, 5 ___/3 9,10,11 (#10 ER) Pre-Assessment ____/11 _______% Post-Assessment ____/15 _______ % Percent of Increase or Decrease: _______% 4 PostTest # Correct __/6 Mastered Pro-Ohio Test # Submarine Rescue Using Systems Post-Test Name:________________________________Date:__________Period:_____ Unit 4 Post-Assessment System Of Equations Answer Document 5 _____/15 Submarine Rescue Using Systems Post-Test Please Answer Question #7 below: __/2 Please Answer Question #11 below: __/4 6 Submarine Rescue Using Systems Post-Test 7