Find the Vertex, Focus, and Directrix of the Parabola

question 22

Multiple Choice

Find the vertex, focus, and directrix of the parabola. Graph the equation.
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• A)vertex: (-7, -4)focus: (-5, -4)directrix: x = -9
• B)vertex: (-7, -4)focus: (-9, -4)directrix: x = -5
• C)vertex: (-7, -4)focus: (-7, -2)directrix: y = -6
• D)vertex: (-7, -4)focus: (-7, -6)directrix: y = -2

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Definitions:

Fixed Expenses

Expenses that remain constant regardless of any variations in the amount of goods produced or the volume of sales, like lease payments, wages, and insurance fees.

Break-even Point

The point at which total costs equal total revenue, meaning no profit or loss is made.

Contribution Margin Ratio

The percentage of each sales dollar remaining after variable costs have been deducted.

Fixed Expenses

Costs that do not change with the level of output or sales in the short term, such as rent or salaries.