Question

Prove that x = 1, y = 1 as well as x = 2, y = 5 is a solution of 4x - y - 3 = 0.

Answer 1

the best way to find whether something is the solution of any given equation or not just put the values in the equation if it satisfy it completely then it is the solution otherwise not.

so put x=1 and y=1 in 4x-y-3 if it comes zero then it is the solution. Repeat it with x=2 and y=5