Comparisons Hold up the ‘+’ card if you think the answer is always positive. Hold up the ‘-’ card if you think the answer is always negative. The ?? Card Hold up the ‘??’ card if you cannot tell based on the given information (cannot be determined).

a = -2 b = 4 a + b

a = -2 b = 4 a - b

a = -2 b = 4 a + -b

a = -2 b = 4 -a + b

a = -2 b = 4 ab

a = -2 b = 4 |ab|

a = -2 b = 4 -(-(-a))

a = -2 b = 4 -(-(-b))

a = -2 b = 4 -ab

a = -2 b = 4 -(ab)

a = -2 b = 4 -(a+b)

a = -2 b = 4 -(a-b)

a = -2 b = 4 -(a- -b)

a = -2 b = 4 abab

-a b

a = -2 b = 4 -(a/b)

x + y

x - y

xy

xyxy

|x + y|

|xy|

-|x + y|

-(x + y)

-x

-(-(-y))

-(x – y)

x2x2

x3x3

-(x 2 )

-4y

3x