19. Find an Equation of the Line Whose X-Intercept Is -3 and Whose Y-Intercept Is 2. ______

1. (5, 7) (6, 8) 2. (-2, 3) m = -1 3. (1, 2) (3, 8)

1. ______2. ______3. ______

4. (4, 7) 5. (6, -2) 6. (7, 5) m = 0

4. ______5. ______6. ______

7. (0, -7) m = -4 8. (6, 2) 9. (-5, 13) (-10,9)

7. ______8. ______9. ______

10. ______11. ______12. ______

13. (1, 2) m = undefined 14. (2, 7) 15. (100,90) (80, 120)

13. ______14. ______15. ______

16. m = -6 b = -11 17. m = 21 b = -1 18. m = 43 b = 0

16. ______17. ______18. ______

19. Find an equation of the line whose x-intercept is -3 and whose y-intercept is 2. ______

20. Find an equation of the line whose y-intercept is -7 and whose x-intercept is 1. ______

21. A car was bought in 1990 for $32,000. During the next five years, the value

of the car depreciated by $3000 per year. Write an equation that gives the

value, y, of the car in terms of the year, x. Let x = 0 correspond to 1990. ______

22. In 1985, the total revenue for Turner Broadcasting Systems was $350 million.

By 1987, the total revenue was $650 million. Assume that the revenue

increased at a constant rate. Write an equation that gives the revenue, y, in

terms of the year, x. Let x = 0 correspond to the year 1980. ______

23. Write x + 9y = 7 in slope-intercept form. ______

24. What are the two things absolutely required in order to write an

equation of a line? ______

25. What is the slope of the line y = 413x – 1725? ______

26. Find the equation of the line that passes through the points (1, -6) and (-3,2) in slope-intercept form.

Then sketch the line on the graph provided. Circle your equation!

27. Find the equation of the line that passes through the points (6, 4) and (-7, 4) in slope-intercept form.

Then sketch the line on the graph provided. Circle your equation!