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Ch 3 review key
- 1. September 17, 2012
Ans Key Review
1. 0 = 6 or 0 = -6 parallel; no solution
2. 0 = 0 coinciding; inf. many solutions
3. (.6, -2.2) or (3/5, -11/5)
4. (1, -4)
10. y = -1x + 13
2 2
5. (3, 7) 11. y = -2x + 7
6. (8, -2) 12. plot points - negative correlation
13. y = 3x + 1
7. $8 per guest
2
$100 fixed cost 14. 10x - y = -14
8. 575 students 15. y = -x - 2
9. y = -8x - 62 16. 16
17. (0, -2/3) (2, 0)