Find the Vertex, the Y-Intercept, and the X-Intercepts (If Any $$f ( x ) = - x ^ { 2 } - 2 x + 8$$

question 57

Multiple Choice

Find the vertex, the y-intercept, and the x-intercepts (if any exist) , and graph the function.
- $$f ( x ) = - x ^ { 2 } - 2 x + 8$$

• A) Vertex \(( - 1,9 )\); \(x\)-int \(= ( - 4,0 )\) and \(( 2,0 )\); \(y\)-int \(= ( 0,8 )\)
• B) Vertex \(( - 1 , - 9 )\); \(x\)-int \(= ( - 4,0 )\) and \(( 2,0 )\); \(\mathrm { y }\)-int \(= ( 0,8 )\)
• C) Vertex \(( 1,9 )\); \(x\)-int \(= ( - 2,0 )\) and \(( 4,0 )\); \(y\)-int \(= ( 0,8 )\)
• D) Vertex \(( - 1,9 )\); \(x\)-int \(= ( - 2,0 )\) and \(( 4,0 )\); \(\mathrm { y }\)-int \(= ( 0,8 )\)

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Definitions:

Discount Rate

The discount rate applied to project the present value of future cash flows from a financial instrument.

Invest

Committing financial resources with the hope of income or profit generation.

Rate of Interest

The interest rate a borrower is charged for loaned money from a lender.