1. What type of relationship is shown by the scatter plot? A. no relationship B. negative C. positive D. both positive and negative Hint 2. Determine whether a scatter plot of a set of data involving height and size of feet would show a positive, negative, or no relationship. A. not enough information given B. positive C. no relationship D. negative Hint 3. Make a function table for f(n) = n - 3. A. B. C. D. Hint 4. Many children grow at a predictable rate. The function f(n) = 2.65n + 28.9 can be used to estimate the height in inches for a boy who is n years old. The function is accurate until about age 13. Complete the function table. A. B. C. D. Hint 5. The graph of a linear function is _______. A. a horizontal line only B. a curved line C. a straight line D. None of these is correct Hint 6. Find the solution of the system y = 2.5x + 1.5 and -3x + y = 1. A. (1, 4) B. (4, 1) C. (2, -1) D. (3, 1) Hint 7. Find the next three terms of the sequence 2, -6, 18, -54, ... . A. 162, -486, 1458 B. 162, 486, -1458 C. -162, 486, -1458 D. None of these is correct. Hint 8. Find the next three terms of , 1, 4, 13. A. 40, 121, 364 B. 40, 121, 360 C. 40, 120, 364 D. 40, 121, 365 Hint 9. Which equation passes through the points (-1, -1), (0, 1), and (1, 3)? A. y =+1 B. y = 2x+1 C. y = x+1 D. y = -2x+1 Hint 10. Find the slope of the line that passes through P(3, 4) and Q(-4, 6). A. 1 B. - C. -1 D. Hint 11. Find the slope of the line that passes through R(-3, 4) and S(5, 2). A. 4 B. C. -4 D. - Hint 12. Graph y = 4x - 3 using the slope and y-intercept. A. B. C. D. Hint 13. A T-shirt company charges a design fee of \$25 and then sells the shirts for \$10 each. The total cost y can be represented by the equation y = 10x + 25, where x represents the number of T-shirts. The graph of the equation is shown. Describe what the slope and y-intercept represent. A. The slope represents the one-time design charge. The y-intercept represents the cost per T-shirt. B. The slope represents the cost per T-shirt. The y-intercept represents the one-time design charge. C. The slope represents the total cost of the T-shirts. The y-intercept represents the one-time design charge. D. The slope represents the number of T-shirts. The y-intercept represents the cost per T-shirt. Hint 14. Solve the system y = 2x – 5 and y = 7 by substitution. A. (7, 9) B. (7, -19) C. (1, 7) D. (6, 7) Hint 15. The tickets for the student council dance are \$5 for singles and \$8 for couples. To cover the expenses, the student council must sell at least \$800 worth of tickets. Which graph represents the number of each type of ticket the student council must sell? A. B. C. D. Hint 16. Coach Wilson has \$60 to spend on pizza and pitchers of soft drinks for his team. If a pizza costs \$12 and a pitcher of soft drink costs \$3, which combination of pizzas and soft drinks can he buy? A. 5 pizzas and 4 pitchers of soft drink B. 6 pizzas and no pitchers of soft drink C. 4 pizzas and 3 pitchers of soft drink D. 4 pizzas and 5 pitchers of soft drink Hint