Use Cramer's Rule to Solve the System of Equations $\mathrm { D } = 0 ; \varnothing$

question 466

Multiple Choice

Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.
-7x -87 =9y
-4x + 4y=4

• A) Cramer's rule does not apply since \(\mathrm { D } = 0 ; \varnothing\)
• B) \(\{ ( - 6 , - 4 ) \}\)
• C) \(\{ ( - 6 , - 5 ) \}\)
• D) \(\{ ( - 7 , - 4 ) \}\)