Question

What is the distance between points P(10, 7) and Q(1, 8)?

Answer 1

Distance between points (x1,y1) and (x2,y2) is
\(\huge d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\)
does this help ??

Answer 2

yah it wold be square root of 73

Answer 3

73 ?? how ?

Answer 4

wait sorry that wrong my bad

Answer 5

(x1-x2)^2 = (10-1)^2 =....?

Answer 6

thats 81

Answer 7

ok, so tell me what you get after redoing it....

Answer 8

right, and
(y1-y2)^2 = (7-8)^2 =... ?

Answer 9

1

Answer 10

yup! \(\sqrt{81+1}=..?\)

Answer 11

81

Answer 12

81+1=82
so, \(d=\sqrt {82}\)