Please help with this math problem

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Venita is sewing new curtains. the table below shows the relationship between the number of stitches in a row and the length ofthe row.sewingnumber of stitches length (cm)51 131532024306what is the relationship between the number of stitches and the length? othe number of stitches istimes the length.o. the number of stitches is 3 times the length.

Can anyone explain to me how to do this? anything will .