The first one is rectangle
It will reflect the same distance over the Y axis, from the right side of the graph to the left side of the graph.

means there exists an integer

such that

. We can divide both sides by

because

. This implies

for some integer, which is identically

.
These are the steps. Just follow the numbers on the left hand side. Hopes this helps. The answer is -3.
Ur answer should be 97
Hope this helps u:)