Answer:
10 blocks
Step-by-step explanation:
Given

east
Required
Determine the shortest possible distance
To better explain my solution, I've added an attachment that illustrates her movement.
Using the attachment as a point of reference, the shortest distance is calculated by calculating the length of the hypotenuse using Pythagoras theorem.
So, we have:



Take positive square root of both sides


The sum could be greater than 1 but not equal to 1.
Slope 2; passes through (-5,1)
the answer is
y-1=2(x+5)