Question

Tell whether the ordered pair is a solution of the system of linear equations. Explain. (3 , 4) x + y = 7 x – 2y = -5

Answer 1

A) x + y = 7
B) x – 2y = -5
Multiplying equation A by 2
A) 2x + 2y = 14 then adding it to B
B) x -2y = -5
3x = 9
x = 3
y = 4
So, (3,4) is a solution.