Answer:
k=1/2
It is a reduction
Step-by-step explanation:
To the scale factor, you simply divide the length of the post image by the image.
10/20=k
1/2=k
Answer:

Step-by-step explanation:
1. expand.

2. Subtract 8x from both sides.

3. simplify 10x - 2 - 8x to 2x - 2.

4. Add 2 to both sides.

5. Simplify 6+2 to 8.

6. Divide both sides by 2.

7. Simplify 8/2 to 4.

8. switch sides.

Therefor, rhe answer is x=4