Reflection in the line y = x

Try to work out the co-ordinates of the reflected points before you reveal the answer.
1.) If the point (2, 3) is reflected over the x-axis what is the new point? 2.) If the point (-4, 6) is reflected over the y-axis what is the new point? 3.) Triangle ABC has vertices A:(1, 2), B:(4, 3), and C:(3, 6). What are the new coordinates of the new vertices if Triangle ABC is reflected over the x-axis. 4.) Write a rule for reflecting a point over the x-axis. 5.) Write a rule for refelcting a point over the y-axis.