The map of a walking trail is drawn on a coordinate grid with three points of interest. The trail starts at R(−1, 4) and goes to S(5, 4) and continues to T(5, −2). The total length of the walking trail is ____ units. (Input whole numbers only.)

Question

kittiwitti1 · Answer

Have you learned the Distance Formula? ☺

jet_black_heart1423 · Answer

?

kittiwitti1 · Answer

Has the Distance Formula been taught in class?

jet_black_heart1423 · Answer

I'm homeschooled and my parents are at work

kittiwitti1 · Answer

$$\text{Distance Formula: }y=\sqrt{\left(x_{2}-x_{1}\right)^{2}+\left(y_{2}-y_{1}\right)^{2}}$$
Yes, but your course still gives --
Wait, you don't take K12?

kittiwitti1 · Answer

I am under the impression that if it's an online school they're supposed to teach you these formulas. :v

But anyway, the idea here is to use the Distance Formula that I just posted to find the lengths

jet_black_heart1423 · Answer

no i have flvs

kittiwitti1 · Answer

Hmm. I don't know what that is but I'll try my best to help ☺

jet_black_heart1423 · Answer

and not all online schools teach that

jet_black_heart1423 · Answer

okay please help

kittiwitti1 · Answer

|dw:1461438998513:dw|

jet_black_heart1423 · Answer

hey are you typing?

kittiwitti1 · Answer

So your goal is to find the distance between each point, and then add those distances up so you get the full perimeter.

|dw:1461439306705:dw|
The Distance Formula uses two coordinates: (x1, y1) and (x2, y2)
So if we were getting the distance of RS we would get (-1,4) and (5,4)
Inputting this into the Distance Formula:$$Distance=\sqrt{\left(x_{2}-x_{1}\right)^{2}+\left(y_{2}-y_{1}\right)^{2}}$$Which then becomes:$$D=\sqrt{\left(5-(-1)\right)^{2}+\left(4-4\right)^{2}}$$