The graphs of the equations 7x + 11y = 3 and 8x + y = 15 intersect at the point P, which also lies on the graph of the equation:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 3x + 5y = 1.
The line which passes through the intersection point of the given two lines will also be satisfied by the point of intersection.
7x + 11y = 3...............(1)
8x + y = 15.................(2)
On solving equation (1) and (2) we get,
x = 2 and y = -1.
(2, -1) satisfy only option 3.