E6.1 In each part, you are given a description. Find the picture below (choler A - 1) that matches the description. Explain your choloes briefly. 1. The graph of /(z, 1) = 4x* + y2 5. A level set of / (z, y) = = _ 2. A level set of / (z, y, =) = 4r + 23 6. A level set of / (r, y, 2) = 23 - 3. A level set of /(z, y,=) - Ar + + 7. A level set of /(z, v. =) = = + 2y + 32 4. The graph of /(my) = x - V