1. What is the slope of in parallelogram ABCD? A. B. C. D. Hint 2. Which pair of lines graphed below are parallel? A. k and n B. l and n C. l and m D. k and m Hint 3. The table shows the possible lengths and widths of a rectangle that has an area of 72 square centimeters. Make a scatter plot of the data. A. B. C. D. Hint 4. Determine the slope of the line containing the points P(-7, -8) and Q(3, 0). A. 2 B. C. D. -2 Hint 5. Which characteristic describes a graph that is linear and has direct variation. A. Variables x and y are not proportional. B. The equation has the form y = mx. C. The equation has the form y = mx + b. D. The graph does not pass through (0, 0). Hint 6. Find the equation that has direct variation. A. y = 5x + 1.3 B. y = 0.8x + 9 C. y = 4x D. y = –3x – 1 Hint 7. Which characteristic describes a graph that is linear and has direct variation. A. The equation has the form y = mx. B. Variables x and y are not proportional. C. The equation has the form y = mx + b. D. The graph does not pass through (0, 0). Hint 8. Find the equation that has direct variation. A. y = 5x + 1.3 B. y = 4x C. y = –3x – 1 D. y = 0.8x + 9 Hint 9. Find the graph that does not have direct variation. A. B. C. D. Hint 10. Find the equation that contains a decreasing linear relationship. A. y = 12+ 2x B. y = 10 + x C. y = 4x – 3 D. y = 5 – 6x Hint 11. Find the situation that is linear but does not have direct variation. A. At the beginning of the summer, Dina had \$200 in the bank. She withdrew \$30 to buy a new pair of shorts. B. At the beginning of the summer, Dina had \$0 in the bank. She earned \$50 mowing lawns the previous week and deposited the money in the bank. C. At the beginning of the summer, Dina had \$200 in the bank. She started a job and deposited \$10 per week. D. At the beginning of the summer, Dina had \$0 in the bank. She started a job and deposited \$10 per week. Hint 12. Find the equation that is nonlinear. A. y = 8 – x B. y = 4y2 C. y = 14 + 6x D. y = –3x – 1 Hint 13. Find the table that represents a graph with direct variation. A. B. C. D. Hint 14. Michael just got a job mowing his elderly neighbor's lawn paying him \$10 each week. Draw a graph showing the amount he receives is increasing very rapidly. Suppose you graph the time in weeks on the horizontal axis and the amount Michael receives on the vertical axis. A. B. C. D. Hint 15. Pam's mother gives Pam \$20 each week for lunch to be bought at the school cafeteria. Lunches cost \$4 per day. Draw a graph showing the amount Pam has left decreasing very slowly. Suppose you graph the time in days on the horizontal axis and the amount Pam has left on the vertical axis. A. B. C. D. Hint 16. What is the equation of a line that has a slope of 3 and passes through (–4, –3)? A. y = 3x + 3 B. y = 3x – 9 C. y = 3x + 9 D. y = 3x – 3 Hint 17. Which line is parallel to the line listed below? A. B. C. D. y = 2x - 5 Hint 18. Which three points are collinear? A. (4, –3), (2, –2), (–4, 1) B. (–5, –3), (–2, 3), (2, –4) C. (–1, 1), (2, 3), (5, 2) D. (3, 1), (4, 0), (–1, 2) Hint 19. Which three points are collinear? A. (–4, 4), (0, –4), (–1, –2) B. (3, –1), (2, 5), (2, –3) C. (1, 2), (–3, –2), (–2, –4) D. (–5, 2), (1, 1), (4, 4) Hint 20. Write the equation in slope-intercept form.–6x = –10 – 2y A. y = 3x – 5 B. –6x + 2y + 10 = 0 C. y + 8 = 3(x + 1) D. y = 3x + 8 Hint