(1,-1) is a solution of the system of linear equations.
To check whether a point is a solution of a system of linear equations, you can substitute the x and y values of the point into each equation and see if they are true.
For example, for point (1,-1):
x−2y = -1, we substitute x=1 and y=-1, we get: 1-2(-1) = -1 which is true.
y = -2x+3, we substitute x=1 and y=-1, we get: -1 = -2(1) + 3, which is true.
Since both equations are true, we can conclude that point (1,-1) is a solution of the system of linear equations.
