Ineed to know what goes in the blank part of the graph and if it is proportional or not and explain how i know (^‿^✿)

Simplify 4 square root of 2 end root plus 7 square root of 2 end root minus 3 square root of 2 . (1 point) 2 square root of 8 8 square root of 2 8 square root of 6 6 square root of 8

Convert 2000 swiss francs to dutch guilders

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?