Question

如图,已知反比例函数y=x/k(k

Answer 1

(1)k＜0,

图像在二四象限,

过点A(-√3,m),

m>0

SAOB=0.5*OB*AB=0.5*√3*m=√3

m=2

y=k/x

k=-2√3

(2) y=ax+1过点A,

代入得a= -√3/3

y=-√3/3x+1

∠ACO正切值OD/OC=1/√3

OA=√7,AC=4 OA/AC=√7/4