10
1
3
2
-2
-1
x
(0,0)
(0.8, 28)
-4
-3
-6
-5
-8
-7
-9
20
30
40
50
60
-10
-20
-30
-40
-50
Area
-60
-70
-80
(-9.3, 28)
Area = 28
4x + 34x
2