Use the following information to answer questions 31-34.
A landscaper will install a triangular garden near the intersection of 2 streets. In the plan of the garden shown below, the angle nearest the intersection is a right angle. The landscaper has purchased the following materials for the garden: 1 bag of fertilizer at a price of $15.50, 50 plants at a price of $0.70 each, and 3 bags of mulch at a price of $4.00 each. An 8% sales tax was added to the total price of these materials. The landscaper will also install a water sprinkler that will be located an equal distance from the 3 vertices of the garden.
33. The plan of the garden will be aligned in the standard (x, y) coordinate plane so that the right angle is at (0, 0) and the other 2 vertices are at (12, 0) and (0, -9). What coordinates give the location of the water sprinkler?