The table shows the outputs y for different inputs x:
input
(x) 3 7 11 15
output
(y) 4 6 8 10
part a: do the data in this table represent a function? justify your answer. (3 points)
part b: compare the data in the table with the relation f(x) = 5x – 21. which relation has a greater value when x = 11? (2 points)
part c: using the relation in part b, what is the value of x if f(x) = 99? (5 points)

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450

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'.