Answer: OPTION A.
Step-by-step explanation:
A dilation is defined as a transformation in which the Image (The figure obtained after the transformation) and the Pre-Image (The original figure before the transformation) have the same shape, but they have different sizes.
In this case you know that the dilation is centered at the origin and the scale factor is:

Therefore, the rule is the following:

You can identify in the figure attached that the point Q is:

Therefore, you must multiply its coordinates by the scale factor 0.5 in order to get its Image Q'. This is:

How about: 5 times 6 = 30
Answer:
16
Step-by-step explanation:
half of one is 0.5 so times 8 by two and get 16
Answer:
y= 1/2x-1
Step-by-step explanation:
The equation of a line is y= mx+c
m represents the slope of the line
c represents the y-intercept
So we plug in our information into the equation.
The slope is 1/2 so y= 1/2x + c
The line crosses at (0,-1) which makes -1 the y-intercept as the line crosses at this point on the y-axis.
Therefore, y= 1/2x-1