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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
二元一次方程式的圖形 急~
Mar 1st 2015, 06:15

1.若方程式4x+3y-k+4=0的圖形通過原點,則k=_____
通過原點就將點(0,0)代入式中
0+0-k+4=0
==>k=4

4.與x=-3的圖形平行,且相距2單位的直線方程式是____

與x=-3的圖形平行有無線條
但又相距2單位的直線方程式右前後兩條即 : x=-1 或x=-5

5.將直線y=x向右平移2單位所得新直線的方程式是___

因平行斜率相同

y=x+b

向右平移2單位: y=x-2

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