Question

How far from the origin is the point (-5, -12)?
A. 13
B. 7
C. 11.49
D. 84.5

Answer 1

Do you know the distance formula? :)

Answer 2

Hmmm nope.

Answer 3

\[D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\]

Answer 4

I'm not positive, but if I had to guess I would say 7.

Answer 5

nope it's not 7

Answer 6

you can use pythagorean formula if you don't know the distance formula

Answer 7

The distance between any two points (a,b) and (c,d) is the square root of the sum of squares of the differences of the corresponding coordinates.
\[\sqrt{(a-c)^{2} + (b-d)^{2}} \]
i.e
Sq rt of 5^2 + 12^2 i.e. 25+144=sq rt of 169=13.

Answer 8

sorry it's not to scale

Answer 9

Thank you both for helping me. I understand a bit better now.

Answer 10

no problem :)