Should sign language be mandatory in schools?

What is the esquation, in point-slope form, of the line that is parallel to the given line and passes through the point (-3,1)?

Какие народы относятся к числу коренных обитателей кубанских земель? носителями каких языков они являются?

Is this inappropriate language,”good evening,everyone. for coming out to sit on hard,uncomfortable stadium concrete on an unseasonably warm evening and wearing clothes and shoes you can’t wait to get home to get get ou of.” if so,how can i write it in formal?