Without Graphing, Decide:
(A) Are the Graphs of the Equations $\left\{ \begin{aligned}y - 5 x & = 4 \\5 y & = 25 x + 20\end{aligned} \right.$

Without graphing, decide:
(a) Are the graphs of the equations are identical lines, parallel lines, or lines intersecting at a single point?
(b) How many solutions does the system have?
- $\left\{ \begin{aligned}y - 5 x & = 4 \\5 y & = 25 x + 20\end{aligned} \right.$

A) lines intersecting at a single point; one solution
B) parallel lines; no solution
C) identical lines; infinite number of solutions