Final answer:
To determine if the point (1,1) satisfies the system of equations, substitute x=1 and y=1 into both equations and check if the resulting equations are true.
Step-by-step explanation:
To determine if the point (1,1) satisfies the given system of equations, we substitute the values of x=1 and y=1 into both equations and check if the resulting equations are true.
Substituting x=1 and y=1 into the first equation, we get:
m(1) + n(1) + 7 = 0
Simplifying, we have:
m + n + 7 = 0
Substituting x=1 and y=1 into the second equation, we get:
n(1) - m(1) + 3 = 0
Simplifying, we have:
n - m + 3 = 0
Since the resulting equations are true, the point (1,1) satisfies the given system of equations.