Answers

The Brainliest Answer!
2014-10-18T17:27:29+05:30
A) Here , x _{1} = 2 \frac{1}{2} =  \frac{5}{2} 

y_{1} = -1 \frac{1}{2} = - \frac{3}{2} 

 x_{2} = - \frac{1}{2} 

 y_{2} =  \frac{1}{2}
Slope =  \frac{ y_{2}- y_{1}  }{ x_{2}- x_{1}  }  
         
 ⇒ \frac{ \frac{1}{2}-(- \frac{3}{2)}  }{- \frac{1}{2}- \frac{5}{2}  }
         
 ⇒ \frac{ \frac{1}{2}+ \frac{3}{2}  }{ \frac{-1-5}{2} }
         
 ⇒ \frac{ \frac{4}{2} }{ \frac{-6}{2} }
         
 ⇒ \frac{2}{-3}
       
  ⇒ \frac{-2}{3}
b) Here, x1 = 3/4, y1= 1 \frac{1}{4} and x2 =-1/2, y2=-1
 Slope=  \frac{ y_{2}- y_{1} }{ x_{2}- x_{1} }  
          ⇒ substitute the values in the above way. you will get the answer as 9/5
 
3 5 3