A.fff\(y=(-\frac{5}{2})·x+2·m\)/fff
B.fff\(y=(\frac{2}{5})·x-5·m\)/fff
C.fff\(y=(\frac{5}{2})·x+2·m\)/fff
D.fff\(y=(\frac{2}{5})·x+2·m\)/fff
E.fff\(y=(-\frac{2}{5})·x-5·m\)/fff
我的答案：
