Can someone please help me with these two question PLEASE?

Graph the equationy= x+3[tex]y = x + 3[/tex]

The legs of a right triangle measure 6 meters and 8 meters. what is the length of the hypotonuse.

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?