Summer school can really be a drag, ya know?

So..

"ABC's vertices A(-1, 1), B(5,1), and C(2,4)

Determine the perimeter of ABC. Express your answer as an exact value in simplest form.

What is the slope of AC?

Find the measure of A

What is the area of ABC?

So, pretty straightforward, I'd like to compare my work with somebody elses though.

By the way, thanks for all the help. You guys have no idea the amount of work I'm facing in quite a few subjects.