Std9-Inequations

Which of the following is an inequation

 $\left(1\right)\ \ \ \ a\ne b$  
 $\left(2\right)\ \ \ \ a\le b$  
 $\left(3\right)\ \ \ \ a>b$  

• Only (1)

• (2) and (3)

• (1), (2) and (3)

Linear Inequations means a single variable x with highest power

• 1

• 2

• 3

• 4

If a < b then

• 
  

   $b-a\ >\ 0$  

•  $b\ -a\ <0$  
  

•  $b-a\ge0$  
  

•  $b-a\le0$  

If a > b then which of the following is true given a, b and c belong to the set of real numbers

• a-c < b-c

• a-c > b-c

• Cannot be said

If a<b then

•  $3a\le3b$  

•  $-3a\ <\ -3b$  

•  $3a<3b$  

•  $3a>3b$  

if a and b are natural numbers and a<b then

• 1/a < 1/b

• 1/a > 1/b

• cannot be said

 $If\ a\ge b\ where\ a\ and\ b\ belong\ to\ R\ \ then$  

•  $\frac{-a}{2}\ge\frac{-b}{2}$  

•  $\frac{a}{2}>\frac{b}{2}$  

•  $\frac{-a}{2}\le\frac{-b}{2}$  

•  $\frac{a}{2}<\frac{b}{2}$  

if a and b are real numbers and a<b then

• 1/a < 1/b

• -1/a > -1/b

• -1/a < -1/b

• Cannot be said

If a < b and c is negative then

• ac < bc

• ac > bc

• Will vary according to the value of a and b

If a - b < 0 then

• a > b

• -a > -b

• a+b > 0