QUESTION 5 at the critical points For the function (x,y)-9-42y + 20 O O 150 QUESTION 6 For the function (x, vid-9- 42 4 20-2 at the critical point QUESTION 7 Match the following testsifor relative extrema and their corresponding definitions. Ley and=e For the discriminant. Defam for 0 2 0 and face D> G and for 20 QUESTION 8 Determine the value of the discriminant, D, at the critical point of the function -42v + 21 - 202- QUESTION 9 Based on the previous rest, classify what occurs at the critical point of the function -42y+20-2 Relathe Manint SaddlePoint Jacanchine