The map of a biking trail is drawn on a coordinate grid.

The trail starts at P(−2, 2) and goes to Q(5, 2).
It goes from Q to R(5, −5) and then to S(8, −5).

What is the total length (in units) of the biking trail?
10

16

17

18

Question

The map of a biking trail is drawn on a coordinate grid.

The trail starts at P(−2, 2) and goes to Q(5, 2).
It goes from Q to R(5, −5) and then to S(8, −5).

What is the total length (in units) of the biking trail?
 10

 16

 17

 18

mehek14 · Answer

P -> Q $\sqrt{(2-2)^2+(5-(-2))^2}$

anonymous · Answer

Formula to find distance$$\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}$$

tal_tal · Answer

I still don't get it

trojanpoem · Answer

|dw:1451666198557:dw|

As the others said to find the distance between two points you use:

sqrt( (y2-y1)^2 + (x2-x1)^2)