On the xy-coordinate plane, point A lies on the y-axis and point B lies on the x-axis. Points A, B, and C form a right triangle with a 90-degree angle at point C and the triangle has an area of 18. If AC is parallel to the x-axis, and BC is parallel to the y-axis, which of the following could be the coordinates of point C?	Choose one:
A) (2, -16) B) (-5, -8) C) (12, 4) D) (3, 5) E) (9, -4)
The area of the triangle formed will be:   1/2 * base * height =   1/2 * |(X-coordinate of point C)| * |(Y-coordinate of point C)| = 18   Thus |product of coordinates of point C| = 36   The answer is (9, -4).
<result>E</result>
On the xy-coordinate plane, point A lies on the y-axis and point B lies on the x-axis. Points A, B, and C form a right triangle with a 90-degree angle at point C and the triangle has an area of 18. If AC is parallel to the x-axis, and BC is parallel to the y-axis, which of the following could be the coordinates of point C?