Find the Solution Set for the System by Graphing Both $$\begin{array} { l } x ^ { 2 } - y ^ { 2 } = 9 \\x ^ { 2 } + y ^ { 2 } = 9\end{array}$$

question 82

Multiple Choice

Find the solution set for the system by graphing both of the system's equations in the same rectangular coordinate
system and finding points of intersection.
- $$\begin{array} { l } x ^ { 2 } - y ^ { 2 } = 9 \\x ^ { 2 } + y ^ { 2 } = 9\end{array}$$

• A) \(\{ ( 3,0 ) , ( - 3,0 ) \}\)
• B) \(\{ ( 0,3 ) , ( 0 , - 3 ) \}\)
• C) \(\{ ( 3,0 ) \}\)
• D) \(\{ ( 0,3 ) \}\)

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Definitions:

Materials Price Variance

The difference between the actual cost of materials used in production and the expected (standard) cost of those materials.

Direct Labor-hours

The total hours worked by employees directly involved in the production process, used as a basis for allocating labor costs to products or services.

Variable Overhead Rate Variance

The difference between the actual variable overhead cost incurred and the expected (standard) cost, based on the actual level of activity.

Direct Labor Standards

The expected labor time and cost that should be incurred under normal conditions to produce a unit of output.