Just want to double check if I'm correct? Tysvm!

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.