Question

The distance between the points (3,3) and (2,1) is:
a) 29
b) 5
c) sqrt of 29
d) sqrt of 5
e) 1

Answer 1

\[D(P1,P2)=\sqrt{(3-2)^{2}+(3-1)^{2}}\]

Answer 2

so the \[\sqrt{5} ?\]

Answer 3

\[\sqrt{(1)^{2}+(2^{2})}=\sqrt{5}\]

Answer 4

thank you

Answer 5

Yes you got the correct answer.

Answer 6

The general equation to calculate a distance between two points, say A and B is :\[AB = \sqrt{(x _{b}-x_{a})^{2}+(y _{b}-y_{a})^{2}}\]
This also applies to points in space, just be sure to include the z component in the sum.