Page 15 - 091math-wb-w6-(equations&inequalities-1)

Workbook

Example 1: If 2 x 4   and 3 y 1   then find the set of the possible values of x y if
a) x,y b) x,y

Example 2: If 2 x 4   and 3 y 1   then find the set of the possible values of x y if
a) x,y b) x,y

Example 3: If 2 x 4   and 3 y 1   then find the set of the possible values of x+2y-3

a) x,y b) x,y

Example 4: If 2 x 4   and 3 y 1   then find the set of the possible values of x  y
2
2

a) x,y b) x,y

Example 5: If a,b,c and a .b 0 b.c 0 2  , then determine the sign of b and c. Can you tell

anything about the sign of a?

Example 6: Solve the given inequalities below. Write the solution set with interval notation.
a)    b) 2 3x 7 
3x
9

15 091math-wb-w6-(equations&inequalities-1)