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Graphing Relations: Mastery Test
Describe the cost of the delivery truck between 1 mile and 2 miles.
Cost (dollars)
0
1
2
8
9
10
3 4 5 6 7
Distance (miles)
A
The cost of the delivery truck between 1 mile and 2 miles is decreasing.
B.
The cost of the delivery truck between 1 mile and 2 miles is constant.
C. The cost of the delivery truck between 1 mile and 2 miles is increasing.
D. The cost of the delivery truck between 1 mile and 2 miles cannot be determined from the given Information
What is the answer

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'.