由于反比例函数的图象所过点的横坐标为-4,
将x=-4代入y=-23x得,y=-23×(-4)=16.
故答案为16.
Most of the colleagues in the company have________ against Joy, for she comes from a small remote mountain village.
A.harm
B.prejudice
C.envy
D.blame
化学方程式书写正确,且属于置换反应的是 [ ]
A.2Fe+6HCl→2FeCl3+3H2↑
B.NaCl+AgNO3→AgCl↓+NaNO3
C.C+2CuO2Cu+CO2↑
D.2H2O22H2O+O2↑