SOLUTION: (b,4) (2,-1) distance = 5 i need the steps for distance when the distance is given with a variable

Algebra ->  Length-and-distance -> SOLUTION: (b,4) (2,-1) distance = 5 i need the steps for distance when the distance is given with a variable       Log On


   

Question 332042: (b,4) (2,-1) distance = 5
i need the steps for distance when the distance is given with a variable
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: The distance formula is d=sqrt%28%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2%29


So plug in the given info to get 5=sqrt%28%28b-2%29%5E2%2B%284-%28-1%29%29%5E2%29 and solve this equation for 'b'.