如题所述
(1)将A(-3,1)带入y=m/xm=-3y=-3/xn=-3/2将A(-3,1)和B(2,-3/2)带入y=kx+bk=-1/2b=-1/2y=-1/2x-1/2(2)&代表“根号”AB y=-1/2x-1/2D(-1,0)C(0,-1/2)AD=&5 CD=&5/2AD/CD=(&5)/(&5/2)=2