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Workbook

Example 8: Let x,y ; If 4 x 5   and 2 y 6  , then

a) find the greatest and the least possible integer value of x y .

b) find the greatest and the least possible integer value of x y .

1
Example 9: If x,y ,  2  1 and 1  3  1 , then what is the least possible integer value of
5 x 2 7 y 2
x 2y ?

EXERCISES 3
1) Let x,y ; If 1 x 3   and 2 y 2   , then find the set of the possible values for the
following.
a) 3x b) 2x+y

c) x-2y d) 2x-3y-1

2) Let x,y ; If 1 x 3   and 2 y 2   then find the set of the possible values for the following.
a) 3x b) 2x+y

c) x-2y d) 2x-3y-1

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