Write the slope intercept form of a line that passes through the given two points (-5,-11) (-2,1)

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

How many ordered pairs of positive integers satisfy xy=32?