Find (a) if the line that has these points : (a,-3) and (3,1) is normal

with the line that has these points : (a,-3) and (-1,-2) .

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- Mar 10th 2009, 05:26 AMbeq!xline equations , very urgent!
Find (

**a**) if the line that has these points : (a,-3) and (3,1) is normal

with the line that has these points : (a,-3) and (-1,-2) . - Mar 10th 2009, 06:26 AMmr fantastic
- Mar 10th 2009, 06:28 AMmathaddict