check mark
check mark
check mark
check mark
check mark
Question 1 of 5: Find the area:
$$A=\pm \frac{1}{2}\left| \begin{array}{ccc}x_1 & y_1 & 1\\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1\end{array}\right|$$ $$(0, 1), (3, -7), (2, 16)$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
48 square units
B
18 square units
C
61/2 square units
D
192 square units
E
31/5 square units
Question 2 of 5: Find the area:
$$A=\pm \frac{1}{2}\left| \begin{array}{ccc}x_1 & y_1 & 1\\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1\end{array}\right|$$ $$(3, -5), (2, 18), (-7, -14)$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
199 square units
B
239/2 square units
C
15/2 square units
D
6 square units
E
18/5 square units
Question 3 of 5: Find the area:
$$A=\pm \frac{1}{2}\left| \begin{array}{ccc}x_1 & y_1 & 1\\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1\end{array}\right|$$ $$(1, -8), (3, 14), (-2, -2)$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
27 square units
B
58 square units
C
39 square units
D
3/2 square units
E
18 square units
Question 4 of 5: Find the area:
$$A=\pm \frac{1}{2}\left| \begin{array}{ccc}x_1 & y_1 & 1\\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1\end{array}\right|$$ $$(-10, 14), (-12, 18), (-1, 7)$$
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
211/5 square units
B
183/2 square units
C
11 square units
D
17/2 square units
E
213/3 square units
Question 5 of 5: Find the area:
$$A=\pm \frac{1}{2}\left| \begin{array}{ccc}x_1 & y_1 & 1\\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1\end{array}\right|$$ $$(15, 22), (9, 7), (-4, -18)$$
Finish »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
19/2 square units
B
193/2 square units
C
45/2 square units
D
181 square units
E
33 square units

Great Job! You Passed!

Better Luck Next Time...

Trophy
Restart Quiz ↻
Review Lesson ↻
Next Lesson »