Answer:
7 and 2
Step-by-step explanation:
7 plus 2 is 9. 7 times 2 is 14.
They were 1 mile away from each other.
4-3=1 mile
We are given a right triangle and we are asked to determine the hypotenuse given the measure of its sides. To do that we will use the Pythagorean theorem:

Now, we solve the square:

Now, we add the values:

Now, we take the square root to both sides:
![h=\sqrt[]{500km^2}](https://tex.z-dn.net/?f=h%3D%5Csqrt%5B%5D%7B500km%5E2%7D)
Solving the operations:

Therefore, the length of the hypotenuse is 22.361 kilometers.
I'm pretty sure that it's the first one: direct variation; y=4x.