Help me please it’s urgent how do i solve this I was absent

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83