6. The line segment AB is dilated with the center of dilation at the origin to obtain a line segment A'B'. The coordinates are A(2,4) and A’ (4,8). If the coordinates of B are (x, y), what are the
coordinates of B'?
A. (x + 2y + 2)
B. (x + 2,2y)
C (2x, 2y)
D. (2x, y)

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,