Page 31 - 技數學 B 升學跨越講義

Chapter 1 坐標系與函數圖形

( ) 14. ʊٝ A(7 , -14)eB(-3,-2) މ̻ࠦɪʘՇᓃdۆ AB ʘʕᓃ M މОk
-7 -5 21 1
(A) (5 , -6)c(B) (2 , -8)c(C) ( , )c(D) ( , - )f
2 2 2 2

( ) 15. ண A(2 , -1)eB(6 , 2) މѬᅺ̻ࠦɪՇᓃd˲ C މᇞݬ AB ɪɓᓃdԴ੻
2AC = 3BCfӋ A ၾ C Շᓃගʘ൷ᕎމОkc(A) 1c(B) 2c(C) 3c(D) 4f

( ) 16. ʊ̻ٝࠦɪ޴ମɧᓃ A(7 , -14)eB(-3 , -2)eC(x , y) ίΝɓٜᇞɪd˲ AB = BCd

ۆ x - y = kc(A) - 3c(B) 3c(C) 23c(D) -23f
( ) 17. ߰ M ᓃމ A(-1 , 3) ၾ B(3 , 7) Շᓃʘʕᓃdۆ M ᓃЇ (3 , 3) ʘ൷ᕎމОk

(A) 10 c(B) 3c(C) 22 c(D) 6 f

( ) 18. ʊٝ A(3 , -4)eB(-5 , -6) މɓ෥ٜٙࢰՇ၌ᓃdۆ෥ːѬᅺމОk

1 11 7 1
(A) (4 , 1)c(B) (-1 , -5)c(C) ( - , - )c(D) ( , )f
2 2 2 2

( ) 19. וɪᕚdϤ෥ࠦጐމεˇ̻˙ఊЗkc(A) 104rc(B) 68rc(C) 21rc(D) 17rf

( ) 20. ணɓ̻Б̬ᗙҖ ABCDdʊٝ A(-4 , 1)eB(3 , 4)eC(2 , 5)dۆ D ᓃѬᅺމОk

(A) (-6 , 5)c(B) (0 , 3)c(C) (-3 , 4)c(D) (-5 , 2)f
( ) 21. ʊٝɧԉҖɧ௟ᓃٙѬᅺʱйމ A(3 , -5)eB(-1 , 8)eC(7 , 6)dϤɧԉҖٙࠠː

ѬᅺމОkc(A) (3 , 3)c(B) (1 , 3)c(C) (2 , 4)c(D) (3 , 2)f

( ) 22. DABC ʕdண G މ DABC ٙࠠːdɦ A(-4 , -5)eB(2,0)eG(3 , -4)dۆ C ᓃѬᅺ
1 3
މОkc(A) ( , -3)c(B) (3 , )c(C) (11 , -7)c(D) (10 , -6)f
3 2

( ) 23. DABC ʕdɧ௟ᓃѬᅺމ A(7 , -5)eB(3 , -2)eC(5 , 1)dண G މ DABC ٙࠠːd
ɦ M މ AC ʘʕᓃdӋ GM ʘڗܓމОkc(A) 1c(B) 3c(C) 5c(D) 6f

( ) 24. ٜᇞ Lj3x - 4y = 12 ၾɚѬᅺൿהఖϓɧԉҖʘࠠːމОk
4 4 4 4
(A) ( , -1)c(B) (-1 , )c(C) (- , 1)c(D) (1 , - )f
3 3 3 3

( ) 25. ʊٝՌᅰ f (x) = 4 - x dۆϤՌᅰ x ٙࠢՓމОk
2
(A) -2 # x # 2c(B) x $ 2 א x # -2c(C) x ! 2c(D) x ! !2f
( ) 26. ʊٝɓϣՌᅰ f (x) = ax + bdɦ f (2) = -3 ˲ f (-1) = 0dۆ f (3) = k

(A) 4c(B) 2c(C) - 2c(D) -4f

( ) 27. ʊٝ f (x + 2) = 3x - 5dۆ f (0) = kc(A) -5c(B) -7c(C) -11c(D) -13f

x + 2 x - 4 -1 2
( ) 28. ʊٝ F ( ) = dۆ F (3) = kc(A) 2c(B) - 1c(C) c(D) - f
x 2x + 1 7 3

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