Problem 4 is correct.
You flip the y coordinate of point S from -4 to +4. The x coordinate stays the same.
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Problem 5
Focus on the points W and X. Because the y coordinates are both 1, we subtract the x coordinates to get 4-1 = 3. The distance from W to X is 3 units. This is another way of saying segment WX is 3 units long. This applies to the preimage.
Then we're told the image has W'X' = 6 which is twice as long as WX = 3. Therefore, the scale factor is 2.
We can write it like this:
[tex]\text{scale factor} = \frac{\text{image length}}{\text{preimage length}} = \frac{W'X'}{WX} = \frac{6}{3} = 2[/tex]
This indicates that each side of W'X'Y'Z' is twice as long compared to each corresponding side of WXYZ.
Answer: 2
