The number of intersection point of the graphs of function 數(shù)學(xué)公式 and function y=kx（k≠0）is


  1. A.
    0
  2. B.
    1
  3. C.
    2
  4. D.
    0 or 2
D
分析：分類討論k的值，即可求出一次函數(shù)與反比例函數(shù)的交點(diǎn)個(gè)數(shù)．
解答：無論k＞0或k＜0，
反比例函數(shù)y=的圖象都位于一、三象限，
當(dāng)k＞0時(shí)，y=kx經(jīng)過一、三象限，
y=與y=kx有兩個(gè)交點(diǎn)；
當(dāng)k＜0時(shí)，y=kx經(jīng)過二、四象限，
y=與y=kx無交點(diǎn)；
綜上所知一次函數(shù)y=kx與反比例函數(shù)y=的交點(diǎn)個(gè)數(shù)有0或2個(gè)．
故選D．
點(diǎn)評：本題考查了反比例函數(shù)和一次函數(shù)的交點(diǎn)問題，是基礎(chǔ)知識要熟練掌握．
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