Câu hỏi: (Đề thi thử THPT QG Sở GD Hà Tĩnh - 2015)

A y =-frac{5}{4}x-frac{1}{2}

B y =-frac{5}{4}x +frac{1}{2}

C y =-frac{1}{4}x-frac{1}{2}

D y =-frac{1}{4}x-frac{3}{2}