3. 100 200 300 400 500 slopeGraph lines Direct var par. & perp Function Relations 500 100 200 300 400 500

4. Answer: Find the slope of the line containing the points ( 7, -3) & ( -2, 4) Question: -7/9 100

5. Answer: The slope of the line y = -5 is… Question: zero 200

6. Answer: Find slope and y- intercept of the line 4x – 8y = 16 Question: slope = ½ y-int = -2 300

7. Answer: Find the slope of the line x = 5 Question: undefined or no slope 400

8. Answer: Find x if the slope between the points (8,4) & (x,-2) is 2/3 Question: x = -1 500

9. Answer: Graph y = 3/4x – 2 using a table. Question: see graph 100

10. Answer: Graph 5x – 4y = 20 using x & y intercepts Question: see graph 200

11. Answer: Write the equation x+ 3y – 3 = 0 in slope- intercept form and graph using slope in y-int. Question: see graph 300

12. Answer: solve -5x + 4 = 12 - 3x graphically Question: see graph x = -4 400

13. Answer: graph y = -5 Question: horizontal line at y=-5 500

14. Answer: Find the constant of variation of the equation Y=1/4x Question: 1/4 100

15. Answer: The variables x and y vary directly. Write a direct variation model that relates x and y when x = -9 and y= 18 Question: y = -2x 200

16. Answer: The variables x and y vary directly. Write a direct variation model that relates x and y when x = -18 and y = 12 Question: y = -2/3 x 300

17. Answer: Graph the direct variation model y=-3x Question: see graph 400

18. Answer: The variables x and y vary directly. If when x = 10 and y = 4; find x when y = 18 Question: x = 45 500

19. Answer: Parallel lines have ________ slopes. Question: the same 100

20. Answer: Perpendicular lines have ________ slopes. Question: negative reciprocal slopes 200

21. Answer:The following two lines are a) parallel b) perpendicular c) neither Y= 1/3x -7; 6x + 2y = 4 Question: perpendicular 300

22. Question: neither 400 Answer:The following two lines are a) parallel b) perpendicular c) neither Y= 5 - 4x; -8x + 2y = -6

23. Question: parallel 500 Answer:The following two lines are a) parallel b) perpendicular c) neither -15x = -3y - 6; -20x + 4y = 16

24. Answer: Evaluate the function f(x) = x^2 +3x For x= -4, -2, 3 Question: 4, -2, 18 100

25. Answer: Write the equation 4x -3y = 12 in function form, so y is a function of x Question: y = -4 + 4/3x 200

26. Answer: Does this graph represent a function? Explain. Question: no 300

27. Answer: Find the slope of the linear function f(-3) = 5, f(2) = -8 Question: -13/5 400

28. Answer: If f(x) = 3x-5 and g(x) = x^2 - 4x + 8 Find g( f( 3)) Question: 8 500