SubArea: Rational functionsLevel: BProject ID: 9000003110Source Problem: 2010015103Accepted: 1Clonable: 1Easy: 0Identify the function that is graphed in the picture.f(x)=2−x1−xf(x)=x−2x+1f(x)=−2−x1−xf(x)=x−1x+1