Bm4的知识精选

已知过点A(-2,m)和B(m,4)的直线与斜率为-2的直线平行,则m的值(   ) A.-8        ...
问题详情:已知过点A(-2,m)和B(m,4)的直线与斜率为-2的直线平行,则m的值(   ) A.-8             B.0               C.2            D.10【回答】A知识点:直线与方程题型:选择...
已知过点A(-2,m)和点B(m,4)的直线为l1,l2:2x+y-1=0,l3:x+ny+1=0,若则实数m...
问题详情:已知过点A(-2,m)和点B(m,4)的直线为l1,l2:2x+y-1=0,l3:x+ny+1=0,若则实数m+n的值为(    )A.-10             B.-2            C.0             D.8【回答】A知识点:直线...
已知过点A(-2,m)和点B(m,4)的直线为l1,直线2x+y-1=0为l2,直线x+ny+1=0为l3.若...
问题详情:已知过点A(-2,m)和点B(m,4)的直线为l1,直线2x+y-1=0为l2,直线x+ny+1=0为l3.若l1∥l2,l2⊥l3,则实数m+n的值为().A.-10    B.-2     C.0       D.8【回答】A解析∵l1∥l2,∴kAB==-2,解得m=-8,又∵l2⊥l3,∴×(-2)=-1,解得n=-2,∴m+n...
已知过点A(-2,m)和B(m,4)的直线与直线x+2y-1=0平行,则m的值为( )A.0        ...
问题详情:已知过点A(-2,m)和B(m,4)的直线与直线x+2y-1=0平行,则m的值为()A.0                                  B.-8C.2                                ...
已知过点A(-2,m)和B(M,4)的直线与直线2x+y-1=0平行,则m的值为  (   )A.0    B...
问题详情:已知过点A(-2,m)和B(M,4)的直线与直线2x+y-1=0平行,则m的值为  (   )A.0    B.-8    C.2       D.10【回答】B知识点:直线与方程题型:选择题...
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