3) reflection across y=1
![3 reflection across y1 class=](https://us-static.z-dn.net/files/d58/6595f0592871d8e8ac01f85b580b29b0.jpg)
Answer:
The line y=-1 is a horizontal line and thus is a line that is parallel to the x-axis. If we reflect about a line that is parallel to the x-axis, then the x-coordinate of the point (that is reflected) will remain the same, thus the image of (2,-4) has x-coordinate 2 and thus the point is of the form (2,b).
Step-by-step explanation:
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