Answer:
-7(5-u)
Step-by-step explanation:
-7(5-u)
-7x5 -7x-u
-35+7u
<h3>
Answer: Choice C. (-1, -5)</h3>
Explanation:
The reflection rule we use is

when we want to reflect over the y axis. The x coordinate flips from positive to negative, or vice versa, while the y coordinate stays the same.
Therefore, 
Whole number
integer
natural number
rational
ANSWER
The scale factor is 2.
EXPLANATION
The point H(7,9) is dilated about the origin and the image is (14,18).
Let the scale factor be k.
Then,

Comparing to the given image, we have:

This implies that,

Divide by 2

Or


Add 8 to both sides
2x = 28
Divide 2 to both sides
Solution: x = 14