May someone please help find the value of these? it’s fine if you only know one. thank you!

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?

Give me the equations of two lines that have the same slope but are not parallel.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?