We went over 4-5 review problems together to begin the period as the students got ready for the chapter 13 test tomorrow. After taking a look at these review problems, the students then spent the rest of the period working on the review sheet. The answers to the review sheet appear below.
Assignment: Chapter 13 review sheet
Answers:
1. 5 radical 5
2. (x-5)2 + y2 = 121
3. radius = 13; (x + 2)2 + (y + 4)2 = 169
4. -11/2
5. 0/-17 = 0
6. (7, 2)
7. ( -2, -1/2)
8. center of circle: (-2, 4); radius = 7
9. center of circle: (0, -6); radius = 3
10. B = (-3, 9)
11. graph of rectangle on axes
12. m = -1
13. m = 1
14. perpendicular lines; slopes are negative reciprocals
15. same midpoint; (3/2, 1/2
16. a. plot two points and connect them with a vector
b. (7, -13)
c. radical 218; or 14.8
17. (6, -2)
18. (-27, 58)
19. (-1, -5)
20. graph of line; y = 2/3 x - 4
21. graph of line; y = -4; horizontal line with y-intercept of -4
22. y = -3/2 x + 4
23. y = 5/6 x + 5
24. y = 2x - 1
25. y = -3/2 x - 2
26. y = 1/2 x + 7
27. diagonals of rectangle are equal to radical (a2 - b2); since both diagonals have the same length, they must be congruent.
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