Answer:
The line x = 4 and y = - x - 1 has only one solution.
Step-by-step explanation:
Consider the provided graph.
The system of equation has the solution at the point where the line intersects.
Now consider the graph of the equation x = 4 and y = - x - 1
The graph of x = 4 is a vertical line.
From the graph it is clear that the line x = 4 and y = - x - 1 intersect at a point.
Now to calculate the number of solutions simply count the number of intersecting points.
By observing the graph it can be concluded that the graph of x = 4 and y = - x - 1 intersect only at one point i.e (4,-5).
Hence, the line x = 4 and y = - x - 1 has only one solution.
