Use the substitution method to solve the system. If the equations of the system are dependent, or if the system is inconsistent, so indicate. 
Definitions:
Q9: Simplify the following algebraic expression and express
Q19: Identify the graph of the inequality. <img
Q21: Graph the equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8967/.jpg" alt="Graph the
Q24: Simplify the expression. Enter the answer in
Q27: Graph the hyperbola. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8967/.jpg" alt="Graph the
Q37: Graph <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8967/.jpg" alt="Graph by
Q57: Solve the equation and verify that the
Q61: Use the factoring method to solve the
Q62: Determine the principal P (to the nearest
Q68: Find the negative geometric mean between 3