Can someone help Bc this teacher is so annoying and I just wanna go.

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

If you could answer these your a life saver

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?