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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中

Jun 23rd 2013, 12:24

１.直角坐標平面上，兩函數f(x)=3x-2和g(x)=6-x的圖形交點坐標為＿_____。

２.一線型函數f(x)=ax-b的圖形平行x軸，並和直線x=-3交於(-3,5)，則a+b=＿___。

３.某次月考班上數學成績偏低，於是老師以一線型函數作換算，將學生的分數重新調整。已知原來考35分，調整後是48分；原來考60分，調整後68分。則：
（１）若曉明原來考80分，調整後變為幾分＿_____。
（２）若曉萱調整後為60分；則原來考幾分。

４.設一次函數f(x)=ax+b，若f(1)：f`(2)=3：4，則a：b的比值是＿____。

５.若兩函數f(x)=2x+6和g(x)=ax-18的圖形交點在x軸上，則：
（１）a= ?
（２）g(-6)= ?

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