數學難題 幫幫我

If AP, BQ are two parallel lines and they pass through the same point A,
then the two lines are the same straight line.

However, two straight can only have maximum one intersection.

It is impossible that A straight line can passes through P and Q at the same time.

Therefore, the question may be wrong because of the contradiction

2012-03-10 00:35:33 補充：
sry... typing mistake, "However, two straight LINES...."

2012-03-11 00:23:00 補充：
問題係

兩條線AP,BQ parallel and same, 甘我let呢條same line做 L1

L1 同 4x + 3y = 25 intersect都合理

但係邊有可能會有兩個intersection, P and Q

兩條slope 唔同既 straight line 頂多得一個intersection point

除非 L1 同 4x+3y = 25又係同一條直線

甘ans: -A/B = -4/3 , 不過條題目就好似無咩意義..

Hey Kenneth,
Your opinion was my voting (-4/3) reference~ Yet, u hv voted 002 with your justification that is different. 若論學術性之嚴謹，的確是 002 的份。遺憾～

2條線一樣,都算係平行bo~

好可能第一句係：
"Two parallel lines AP,BQ pass throught the point A(5,0) and B(x,x)respectively."
否則第一句英文文意不通。

我諗唔係題目錯﹐ 係佢抄漏野。

AP // BQ,
A 位於AP及BQ上,
.`. ABPQ共線.
.`. AP,BQ的斜率 = -4/3

你唔使做啦，條題目錯 ga。
兩係平衡線又點可以穿過同一點呢?
佢玩你。