Exploring Reflections on the Coordinate Plane

When reflecting point A over a horizontal or vertical line, how do you know where point A' should be located.

When reflecting point A over a line with a slope of 1/1 or -1/1, how do you know where point A' should be located.

What type of transformation gives the same result as a composition of two reflections over a horizontal lines.

What kind of transformation gives the same result as a composition of a reflection over a line with slope of (1/1) and a line with a slope of (-1/1)?

Give an example of a composition of two reflections where order matters and an example where order does not matter.