Maths Question[好急][1晚之內要答倒]

1.find the maximum and the minimum values of P subject to the given constrains.
P=x+y
4x-y大過或等於4
3x-2y-3細過或等於0
2x-3y大過或等於-8

2.[a]Draw and shade the region that satisfies the following constrints;
y大過或等於-2
y細過或等於2x+2
4y細過或等於-14x+41

[b]Find the maximum and the minimum values of P=x+2y-1 subject to the constraints in [a] if x and y are
[i] real numbers
[ii]integers