Find the value of the variable and df if d is between c and f if cd 4y -9, df 2y-7, and cf 14.

CF = CD + DF (since D is simply a point on the line, and C to that point added onto F to that point is CF), so 4y-9+2y-7=14. Adding it up, we get 6y-16=14 and adding by 16 we get 30=6y. Dividing both sides by 6, we get y=5. Plugging that into DF, we get 10-7=DF=3

D. i think it is the savings

B.the point lies directly on the regression