3. What is the answer

The answer is A

Step-by-step explanation:

That is the answer

A

Step-by-step explanation:

The domain is the values of x covered by the graph

The graph has closed circles at x = - 1 and x = 3 meaning x can equal both x = - 1 and x = 3 , then the domain is

- 1 ≤ x ≤ 3 → A

6

Step-by-step explanation

On the graph, the intersection point of horizontal line y=2 and vertical line x=-1 will be where point B is. Since AB is 3 units long, you'll want to count 3 spaces to the right, so A will be located at (2, 2). This is your base. Plug this into the formula for area of a triangle.

1/2base x height

1/2(3) x height= 6

1.5 x height= 6

6/1.5= 4

Height= 4

Count four spaces up from B, and you'll wind up on (-1, 6)

Hope this helps :)