Which points can be used to create a line with an undefined slope through(-3,0) ? check all that apply

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

What is the total area of the figure?

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i