1. Determine the slope of a line through points at (-4, 3) and (5, -1). A. B. C. D. Hint 2. Determine the slope of the line through points at (2, -5) and (2, 3). A. 0 B. -2 C. undefined D. Hint 3. Write the point–slope form of an equation for the line passing through (2, –5) with slope A. B. C. D. Hint 4. Write an equation in slope–intercept form of the line passing through points at (1, –1) and (-3, 3). A. y = –1 B. y = –x + 1 C. y = –x D. y = 1 Hint 5. Which situation would result in a scatter plot that shows no relationship? A. length of automobile trip and gasoline consumed by vehicle B. age and taxes paid over lifetime C. age of the head of the household and last digit of phone number D. size of house and value Hint 6. Determine the slope and y-intercept of the graph of –4 + 2y = 8x. A. B. m = 4; b = 2 C. D. m = 2; b = 4 Hint 7. The graphs of the equations y = –2x – 3 and y = –2x + 3 are a family of graphs because _________. A. both slopes are negative B. both equations are solved for y C. the slope of each line is –2 D. the y-intercepts are opposites Hint 8. Consider the equation . Which equation will have a steeper graph, but the same y–intercept? A. B. C. D. Hint 9. If two lines have the same slope, then they are _______. A. vertical B. parallel C. perpendicular D. intersecting Hint 10. Write the point-slope form of an equation of the line in the graph. Use (-2, 0) for (x1, y1). A. y = (x + 2) B. y – 2 = x C. y = (x – 2) D. y + 2 = x Hint 11. Write an equation in slope–intercept form of the line with slope 14 and y-intercept 28. A. x = 28y + 14 B. y = 14x + 28 C. y = 28x + 14 D. x = 14y + 28 Hint 12. The scatter plot shows the relationship between number of weekly meals at fast food restaurants and blood cholesterol level for 25 adults in a correlational study. Describe the independent and dependent variables of the graph and what the graph indicates. A. The independent variable is blood cholesterol level. The dependent variable is the number of meals per week at a fast food restaurant. In the study, people who ate more often at fast food restaurants generally had higher blood cholesterol levels. B. The independent variable is the number of meals per week at a fast food restaurant. The dependent variable is blood cholesterol level. In the study, people who ate more often at fast food restaurants generally had higher blood cholesterol levels. C. The independent variable is blood cholesterol level. The dependent variable is the number of meals per week at a fast food restaurant. In the study, people who ate more often at fast food restaurants generally had lower blood cholesterol levels. D. The independent variable is the number of meals per week at a fast food restaurant. The dependent variable is blood cholesterol level. In the study, people who ate more often at fast food restaurants generally had lower blood cholesterol levels. Hint 13. What is the equation of the graph? A. x = -3 B. y = -3 C. x = 3 D. y = 3 Hint 14. What would the slope of have to be for JKLM to be a trapezoid? A. B. C. - D. - Hint