1.c 2.c 3.c 4.b 5.a 6.x=5 7.5 8。 There is no solution 9. x = 310.2112.c17.1.

1.c2. Root number 33.b4.b5.-26. ③④7. 1.8 . 1.09 . a 1.d 13 . c 16 . k =

17. 1.2 Images and Properties of Inverse Proportional Function (1)

3 . y =- 1/x 4 . b 6 . m < 1 7 . k < 0 8 . b 9 . c 10 . c 1 1 . b 12。 > 13.2

17.2 Practical Problems and Inverse Proportional Functions (1)

2.a 4.3m 5.80 6.0.5 7。 Small 8.6 y=6/x