On a map's coordinate grid, Walt City is located at (-1,-3) and Koshville is located at (4,9). How long is a train's route as the train travels along a straight
line from Walt City to Koshville? (One map unit equals one mile)

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus