A group of roommates decided to divide the $1,500 cost of renting an apartment equally among themselves . When one of the roommates moved out, those still remaining equally divided the $1,500 cost equally , but each roommate's share of the rent increased by $ 50 . How many roommates were in the apartment initially ?

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'.

c - they will have the same distribution

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this is the only one that could make sense. : )

it is not that hard all u have to do is plot the graph

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do you have an easier question cause this shh is hard like theheck

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