Tell Whether the Ordered Pair (4,-5) Is a Solution of the System

question 60

Multiple Choice

Tell whether the ordered pair (4,-5) is a solution of the system of equations. $\left\{ \begin{array} { l } y + 4 = \frac { 1 } { 4 } x \\5 x + 4 y = 0\end{array} \right.$

• A) no
• B) yes

---

Definitions:

Tariff

A levy placed by a government on imports to manage trade amounts and safeguard local sectors.

Brazilian Ethanol

Ethanol fuel produced in Brazil, primarily from sugarcane, used as a biofuel alternative to gasoline.

Consumer Surplus

The difference between the maximum price consumers are willing to pay for a product and the actual price they pay, reflecting consumer gain.

Producer Surplus

The difference between the amount producers are willing to accept for a good or service versus what they actually receive.