You didn't give us a scatter plot but I would guess d based off of the questions and how they are patterned
Use area formula (length x width)
42 x 25.5 = 1,071
Divide by total cost of wall paper
1,071/771.25 = $1.38 per square foot
X=6
-6+ 7(y) = 8
-6 + 7(2)
-6 + 14
You subtract when adding a positive and negative number
Since the positive number is higher, your answer will be positive.
-6 + 14 = 8
