在双曲线Y=-8/X中,
令X=-2,Y=4,令Y=-2,X=4,
∴A(-2,4),B(4,-2),
可得直线AB解析式:Y=-X+2,
设直线AB交Y轴于C、C(0,2)
SΔOAB=SΔOCA+SΔOCB
=1/2×2×2+1/2×2×4
=6.
在双曲线Y=-8/X中,
令X=-2,Y=4,令Y=-2,X=4,
∴A(-2,4),B(4,-2),
可得直线AB解析式:Y=-X+2,
设直线AB交Y轴于C、C(0,2)
SΔOAB=SΔOCA+SΔOCB
=1/2×2×2+1/2×2×4
=6.