The given graph contains a line
The general equation of the line is
By observing the graph, we get two points which lie on the line
that are (0,3) and (-4,0)
Substitute x=0 and y=3 in the equation of the line, we get
Substitute x=-4 and y=0 in the equation of the line, we get
Substitute b=3, we get
Transferring 4 to the right-hand side, we get
By substituting b=3 and m=3/4 in the equation of the line, we get
We get the equation of the given line.
By giving many values to x, we will get many values for y.
Hence this graph has infinite solutions.