August 2018 1 122 Report
Let (x,y) satisfied three simultaneous inequalities

x+y more or equal to 1, 3y more than or equal to 2x-1, 3x more than or equal to 2y
a. sketch the range of (x,y)
b. Find the bound of x and y
c. Find the maximum value of y-2x

.....(ans)

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