Answer:
8.5 feet
Explanation:
We are given that equation of the line representing the zip line is y=x-7
The equation can be written as

There is a tree in your yard at the point (2,7).
We have to find the distance of the tree from the zip line.
The perpendicular distance of point (x,y) from the line ax+by+c=0 is given by
Distance =d=

Using this formula

Substitute the value of x=2 and y=7
Then, we get
If 1 unit represent 1 foot
Then , the distance,

Hence, the approximate distance of tree from the zip line=8.5 feet