Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
-$$\begin{array} { l }
y = - 4 x + 9 \
20 x + 5 y = 45
\end{array}$$
A) $\varnothing$
B) $\{ ( 0,9 ) \}$
C) $\{ ( x , y ) \mid 4 x + y = 9 \}$
D) $\{ ( 0,0 ) \}$

Question

Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
-$$\begin{array} { l } 
y = - 4 x + 9 \
20 x + 5 y = 45
\end{array}$$
A) $\varnothing$
B) $\{ ( 0,9 ) \}$
C) $\{ ( x , y ) \mid 4 x + y = 9 \}$
D) $\{ ( 0,0 ) \}$

Quizplus · Accepted Answer

The system has infinitely many solutions because the equations are equivalent.

Solve the System by the Method of Your Choice y=−4x+920x+5y=45\begin{array} { l } y = - 4 x + 9 \\20 x + 5 y = 45\end{array}y=−4x+920x+5y=45​

Solve the System by the Method of Your Choice $\begin{array} { l } y = - 4 x + 9 \\20 x + 5 y = 45\end{array}$