PLEASE HELP!! step by step if possible NO LINKS

Aline passes through 3,7 and 6,9 what equation represents the line

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Tell whether the two rates form a proportion