Answer:
To be a function a graph must pass the vertical line test and the only one that does this is the bottom right one.
Area of parallelogram= base x height
218.7= 6.75 x height
height= 218.7÷6.75
height= 32.4
You can find replcing x and y by the coordinates of the points
A : 5.-2 + 5 ≠9 not solution
B : 5.1 + 4 = 9 so 3.1 + 2.4 = 11 ≠4 not solution
C: 5.2 + = 9 so 3.2 + 2.-1 = 4 both are right then C is solution
D: 5.4 - 4 = 16 ≠ 9 not solution