You currently have a deck on the back of your house that has an area of 144 sq. ft. You and your family have decided to increase the area of your deck to 168 sq. ft. What will be the percent of increase to the area of the deck? Round your answer to the nearest tenth if necessary.

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ou currently have a deck on the back of your house that has an area of 144 sq. ft. You and your family have decided to increase the area of your deck to 168 sq. ft. What will be the percent of increase to the area of the deck? Round your answer to the nearest tenth if necessary.

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for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.