JEE Main 2019 Mathematics question
If the system of linear equations , , has a solution (x, y, z), z ≠ 0, then (x, y) lies on the straight line whose equation is:
Answer: (A)
Solution
Adding the first and third equations: 4x − 3y = 4.
If the system of linear equations , , has a solution (x, y, z), z ≠ 0, then (x, y) lies on the straight line whose equation is:
Adding the first and third equations: 4x − 3y = 4.