2.如圖1,一次函數(shù)y=
x+1的圖象分別與x軸,y軸交于點(diǎn)A,C,與反比例函數(shù)y=
(x>0)的圖象交于點(diǎn)P,已知點(diǎn)P的縱坐標(biāo)為4,PB⊥x軸,垂足為點(diǎn)B.
(1)求m的值;
(2)點(diǎn)Q是函數(shù)y=
(x>0)圖象上點(diǎn)P左側(cè)一點(diǎn),且△BPQ的面積為6,求點(diǎn)Q的坐標(biāo);
(3)如圖2,點(diǎn)M是函數(shù)y=
(x>0)圖象上點(diǎn)P右側(cè)的一個(gè)動(dòng)點(diǎn),過點(diǎn)M作MD⊥AP于點(diǎn)D,若∠PMD=45°,求點(diǎn)M的坐標(biāo).
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