Alan is saving for a surfboard. he has saved $200 and he earns $15 per hour life guarding. if the total money saved (s) after (h) number of hours worked is given by the equation s = 15h + 200, how many hours will he need to work in order to earn $350 for his surfboard? a. 3 hours b. 8 hours c. 10 hours d. 30 hours

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'.

noncoplanar points are points that do not lie on the same line.