What is the slope of the line on the graph?

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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?

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?