Compute the slope of the line through the given points, then graph the line and use to fin...

Compute the slope of the line through the given points, then graph the line and use to find two additional points on the line. Answers may vary.

The graph shown models the relationship between the cost of a new home and the size of the home in square feet. (a) Determine the slope of the line and interpret what the slope ratio means in this context and (b) estimate the cost of a 3000 ft2 home.