PP-T2-DS189

由 **Huang Hsin-Yi** » 2008-03-18 17:42

189. 18439-!-item-!-187;#058&011934
In the xy-plane, the line k passes through the origin and through the point (a,b), where ab =/= 0,. Is b positive?

(1) The slope of line k is negative.

(2) a < b

Ans:C

感覺上A就可知答案了說 ;-$

由 **sunnyblue13s** » 2008-03-18 21:23

沒有(2)...的話....b會變負數....設(a,b)=(-1.1) / (0.0) / (1.-1)
把圖畫出來...你就會知道原因了....

還有~~你好像忘了編下面幾題的題號ㄟ~~ *-)

由 **Huang Hsin-Yi** » 2008-03-18 21:30

懂了,謝謝

下面那幾題是因為我是做pp軟體
在零碎的破解也找不到題號 ;''(

PP-T2-DS189

PP-T2-DS189

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