Problema Solution
Joe is looking at a treasure map, which is drawn on a rectangular coordinate grid. However, instead of putting an x where the treasure should be, some sick person left this clue. The treasure is at a spot where one coordinate is the opposite of the other and the y-coordinate is a 4 greater than the x-coordinate. At which coordinates should Jose look for the treasure?
Answer provided by our tutors
y=-x
x=-y
y=x+4
-x=x+4
2x=-4
x=-2
the coordinates, therefore, are (-2,2)