Graphing Linear Functions: Slope-
intercept and Standard Forms
By: Toby Heaton
8/22/2019
Suppose you are going on a geocaching adventure to find a cache that your friend has hidden.
Your friend has provided you with some clues that will help you discover what the cache contains and
where it might be. Follow the directions in each clue description below.
Clue #1
: The theme of the cache is "Superheroes." Carefully graph the four lines with the following
equations on the coordinate plane below to see the shape of the item.
y
=
2
x
+
13
2
x
−
y
=
17
y
=
−
1
2
x
+
13
x
+
2
y
=−
14
Clue #2:
The item in the cache is thin, and you can fold it or bend it. Just like the lines you
graphed intersect at four corners, the item also has four corners. The coordinates of the cache

location correspond to one of the points where the four lines intersect. Identify the coordinates
of the points where each pair of lines intersect. Write your answers as ordered pairs in (x, y)
form.
)
)