Question 636027
Those two lines have the same slope.
Lines with the same slope are either parallel to each other, or they are the same line.
Since the y-intercepts are diffetrent, they cross the y-axis at different points and are different lines, {{{highlight(parallel)}}} to each other.
Being parallel, they have no point in common, so there is no (x, y) that satisfies both equations.
As a consequence, the system has {{{highlight(0)}}} solutions.
The lines look like this:
{{{drawing(300,300,-2.5,2.5,-8,12,
grid(1),
blue(line(-3,-15,3,9)), line(-3,-4,1,12)
)}}}