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Workbook

3) If a,b,c . a b 0 and bc 0 then determine the sign of b – c.
2

4) Solve the given inequalities below. Write the solution set with interval notation.

a) 4x 2 x 7   b) 4x 6    x 9

c) 3 2x 3(   )  9 x d) 7 x 10 2x x 1    

5) If x,y ; If 2 x 1   and 3 y 2   , what is the number of possible integer values for
x  y .
2
2

1
1
6) If ,a b and   1 and  1 b   , then find the sum of possible integer values of 2a b .
a
9 3 5 ab

1
7) If x , y R,  2  1 and 1  3  1 , then what is the least possible integer value of 3x 2y .
5 x 2 7 y 2

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