Discussion
The point of intersection of the lines \(x+y=7\) and \(x-y=3\) is:
Answer: B
We solve the system of linear equations.
Eq 1: x + y = 7
Eq 2: x - y = 3
Adding the two equations: (x+y) + (x-y) = 7+3 => 2x = 10 => x = 5.
Substitute x=5 into the first equation: 5 + y = 7 => y = 2.
The point of intersection is (5, 2).
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