SOLUTION: find distance between P and Q P( 4,9); Q(9, 21) P(6,-3); Q(-3, 2)

Question 322840: find distance between P and Q
P( 4,9); Q(9, 21)
P(6,-3); Q(-3, 2)

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
I'll do the first one to get you started.

# 1

Note:

is the first point

. So this means that and .
Also,

is the second point

. So this means that and .

Start with the distance formula.

Plug in , , , and .

Subtract from to get .

Subtract from to get .

Square to get .

Square to get .

Add to to get .

Take the square root of to get .

So our answer is

So the distance between the two points P and Q is 13 units.

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