Answer:
A = (1/2)(y2 - y1)(x3 - x1) (This corresponds to Answer D)
Step-by-step explanation:
Let (y2 - y1) represent the length of the base and (x3 - x1) represent the height. Then, according to the formula for the area of a triangle of base b and height h, the area in this case is:
A = (1/2)(y2 - y1)(x3 - x1) (This corresponds to Answer D)
