Freedom of the press is found in the amendment.

Freedom of the press is found in the 1st Amendment.

Explanation:

The constitution says, in the first amendment:

"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."

As you can see from the bold words, the first amendment says that Congress can't take away freedom of the press. So the answer is in the 1st Amendment.

of what agreement it does not show

well considering i can't see the graph, it's probably prices