?
2
(C)數列a+3,b+3,C+3是公差3的等差數列 (D)數列 Sa,5b,c 是公差 15 的等差數列
6. 若 al, Q2,03,04, as , 06,07 是等差數列,則下列何者正確?
(A) a7-Q3 = Us -02 (B) as + ds=43 + as (C) 2a4=d3 +a6 (D) ai + as + as = a2 + aa + Q6
7. 下列哪一個函數的圖形不會通過(3,-5)?
(A) y=-5 (B) y=-2x - 1 (C) y=3x - 14 (D) y=x-8
-5