1.若直線經(jīng)過原點(diǎn)和點(diǎn)A.則它的斜率為( ) A.-1 B.1 C.1或-1 D.0 查看更多

 

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若直線經(jīng)過原點(diǎn)和點(diǎn)A(2,2),則它的傾斜角為

     A.-45°       B.45°            C.135°            D.不存在

 

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若直線經(jīng)過原點(diǎn)和點(diǎn)A(2,2),則它的傾斜角為
A.-45° B.45°C.135°D.不存在

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若直線經(jīng)過原點(diǎn)和點(diǎn)A(-2,-2),則它的斜率為

A.-1              B.1                C.1或-1               D.0

 

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若直線經(jīng)過原點(diǎn)和點(diǎn)A(-2,-2),則它的斜率為(    )

A.-1                B.1                   C.1或-1                   D.0

 

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若直線經(jīng)過原點(diǎn)和點(diǎn)A(-2,-2),則它的斜率為

A.-1 B.1 C.1或-1 D.0

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