A Triangle with Vertices at (X1, Y1), (X2, Y2), and (X3

question 367

Multiple Choice

A triangle with vertices at (x1, y1) , (x2, y2) , and (x3, y3) has area equal to the absolute value of D, where $$D = \frac { 1 } { 2 } \left| \begin{array} { l l l } x _ { 1 } & y _ { 1 } & 1 \\x _ { 2 } & y _ { 2 } & 1 \\x _ { 3 } & y _ { 3 } & 1\end{array} \right|$$ Find the area of the triangle having vertices at P, Q, and R.
- $P ( 1,5 ) , Q ( 5,7 ) , R ( 8,1 )$

• A) 12
• B) 30
• C) 15
• D) 0

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Definitions:

General Ledger Control Accounts

Accounts used to summarize the total balances of several subsidiary accounts, facilitating the reconciliation and reporting process.

Subsidiary Ledgers

Detailed ledgers that contain information supporting accounts listed in the general ledger, such as details on accounts receivable, accounts payable, etc.

Subsidiary Ledgers

Detailed records that contain information about specific accounts, which together support and reconcile with summary amounts in the general ledger.

Daily Postings

The routine process of recording transactions in the books of accounts or ledgers on a daily basis to ensure financial records are up-to-date.