問(wèn)題補(bǔ)充:?jiǎn)芜x題 過(guò)點(diǎn)(2,0),且斜率為3的直線方程為?
A.y=3x+2
B.y=3x-2
C.y=3(x-2)
D.y=3(x+2)
答案:C
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