(2)當(dāng)-3= -5+2m,即m=1時(shí),圖像與y軸的交點(diǎn)為（0,-3）.
(3)當(dāng)0= -5+2m,即m=5/2時(shí),圖像經(jīng)過(guò)原點(diǎn).
(4)當(dāng)m+4= -3,即m= -7時(shí),圖像平行于y=-3x-1,此時(shí)該圖像第二、三、四象限.
(5)當(dāng)-5+2m<0,即m<5/2時(shí),函數(shù)圖像與y軸交于負(fù)半軸.
(6)當(dāng) -5+2m<0,且m+4>0,即-4