1. Which equation is graphed below? A. B. C. D. Hint 2. If the domain of the function is {-6, 2, 5, 9} what is the range? A. B. C. {-3, -5, 8, 12} D. Hint 3. What is the slope of the line through the points A(-3, 4) and B(2, -1)? A. -1 B. C. -3 D. 1 Hint 4. Determine whether the relation is a function. Explain. A. Yes, because each element in the domain is paired with exactly one element in the range. B. Yes, because every relation is a function. C. No, because there is an element in the domain that is paired with two elements in the range. D. No, because there are two elements in the domain that are paired with the same element in the range. Hint 5. Which of the following is (are) true about functions? A. Functions are relations. B. In a function, each member of the domain is paired with one and only one member of the range. C. All of these D. Functions pass the vertical line test. Hint 6. Find the slope of the line that passes through (-10, 5) and (2, 5). A. undefined B. -12 C. 0 D. -8 Hint 7. Suppose y varies directly with x and when Write an equation relating x and y. A. B. C. D. Hint 8. State the slope and y- intercept of the graph of 10x - 13y = 36. A. B. C. D. Hint 9. State the slope and y- intercept of the graph of 7x + 4y = 28. A. B. C. D. Hint 10. Write an equation in slope-intercept form for the line graphed. A. B. C. D. Hint 11. Use the table of values to write an equation in slope-intercept form. A. B. C. y = -3x – 31 D. y = 3x + 11 Hint 12. A scatter plot contains the points (2, 8) and (19, 59). Write an equation in slope-intercept form for the best-fit line of the scatter plot. A. B. y = -3x + 15 C. y = 3x + 2 D. Hint 13. A best-fit line has the equation which models the number of hours y of a trip that is x miles long. Predict the time of a 200-mile trip. A. about 4.6 hours B. about 3.1 hours C. about 2.3 hours D. about 3.8 hours Hint 14. The table shows how the perimeter and the area of a square change as side length increases. Which has a greater rate of change? A. cannot be determined B. area C. same rate of change D. perimeter Hint 15. Taylor (pink graph) and Sue (blue graph) got puppies from the same litter. The graph below shows each puppy’s weight for several weeks. Which puppy is growing faster? A. Taylor’s B. cannot be determined C. Sue’s D. they are growing at the same rate Hint 16. Which is a true statement about the graph below? A. The rate of change is 0. B. There is not a constant rate of change. C. The two quantities are not proportional D. The amount earned varies directly with the number of dogs walked. Hint 17. What is the domain of the relation {(−9, 2), (4, −6), (0, 3)}? A. {−9, 2} B. {−9, −6, 0, 2, 3, 4} C. {2, −6, 3} D. {−9, 4, 0} Hint 18. Rashonda practiced the piano 30 minutes on Monday. For each successive day, she practiced the piano for 15 minutes longer than the day before. On what day did she practice for more than 90 minutes? A. Sunday B. Saturday C. Friday D. Thursday Hint