Solve the Problem $y ^ { 2 } = 7 x$

question 47

Multiple Choice

Solve the problem.
-If a cross-section of the parabolic mirror in a flashlight has the equation $y ^ { 2 } = 7 x$ x, where should the bulb be placed?

• A) \(\frac { 7 } { 4 }\) units to the left of the vertex
• B) \(\frac { 7 } { 2 }\) units to the right of the vertex
• C) \(\frac { 7 } { 4 }\) units to the right of the vertex
• D) \(\frac { 7 } { 4 }\) units above the vertex

---

Definitions:

Inferior Good

A type of good for which demand decreases as the income of consumers increases, inversely related to the consumer's income.

Complementary Good

A product that is consumed with another product, where demand for one increases demand for the other.

Normal Good

A good for which demand increases as the income of consumers increases.

Supply Curve

The supply curve is a graphical representation showing the relationship between the quantity of a good that producers are willing to sell and the price of the good.