Solve the System by the Method of Substitution $\left\{ \begin{array} { c } x - y = - 7 \\x ^ { 2 } - y = - 5\end{array} \right.$

question 24

Multiple Choice

Solve the system by the method of substitution. $\left\{ \begin{array} { c } x - y = - 7 \\x ^ { 2 } - y = - 5\end{array} \right.$

• A)(2, -5), (-1, -8)
• B)(2, 9), (-1, 6)
• C)(2, 5), (-1, 2)
• D)(2, 5)
• E)no real solution

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Definitions:

Potential Energy

Stored energy; energy that can do work as a consequence of its position or state. Compare with kinetic energy.

Chemical Bond

The force that holds atoms together in molecules or compounds through the sharing or transfer of electrons.

Kilocalories

A unit of energy measurement in nutrition, equal to 1000 calories, indicating the energy food provides.

Biologists

Scientists who study living organisms and their relationships to their environments, exploring the complexities of life processes.