∵A(2,4),B(-1/2,-16)
∴线段AB的解析式为:y=8k-12
所以设线段AB与x轴y轴的交点为C,D.
坐标为:C(3/2,0),D(0,-12)
S△AOB=S△AOC+S△COD+S△DOB
=1/2(3/2×4)+1/2(3/2×12)+1/2(1/2×12)
=15
∵A(2,4),B(-1/2,-16)
∴线段AB的解析式为:y=8k-12
所以设线段AB与x轴y轴的交点为C,D.
坐标为:C(3/2,0),D(0,-12)
S△AOB=S△AOC+S△COD+S△DOB
=1/2(3/2×4)+1/2(3/2×12)+1/2(1/2×12)
=15