SOLUTION: Point D has coordinates (5,-7) and point B has coordinates (-3,-1). Find the measure of DB.

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Question 640551: Point D has coordinates (5,-7) and point B has coordinates (-3,-1). Find the measure of DB.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
We need to find the distance from D to B to find the measure of DB

Remember that the two generic points are (x1, y1) and (x2, y2)

So (x1, y1) = (5, -7), which means x1=5 and y1=-7
and (x2, y2) = (-3, -1), which means x2=-3 and y2=-1

So in short, x1=5, y1=-7, x2=-3, and y2=-1.

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d = sqrt((x2-x1)^2+(y2-y1)^2)


d = sqrt((-3-5)^2+(-1-(-7))^2)


d = sqrt((-3-5)^2+(-1+7)^2)


d = sqrt((-8)^2+(6)^2)


d = sqrt(64+36)


d = sqrt(100)


d = 10


So exact distance between the two points is 10 units.

So the measure of DB is 10 units