设<img src="https://storage.tutusouti.com/pzst/question_bank/res/62/99/6299669f344996df209d4898fe886375fd8049f5.jpg?x-oss-process=image/sharpen,200"/>的方程为<img src="https://storage.tutusouti.com/pzst/question_bank/res/20/88/2088e3b4351e0f0e0b75393f15c37e3e2e2dbe1d.jpg?x-oss-process=image/sharpen,200"/>，则<img src="https://storage.tutusouti.com/pzst/question_bank/res/9f/2a/9f2a7294dcbb9d6bfc3e3ceee5a081b90dcaa346.jpg?x-oss-process=image/sharpen,200"/>（）.