Question

Check which of the following are solutions of the equation
x - 2y = 4 and which are not :
a) (0,2)
b) (2,0)
c) (4,0)
d) (√2,4√2)
e) (1,1)​

Answer 1

(c) (4,0) is the correct answer because if x=4 then,

x-2y=4

4-2y=4

4-4=2y

0=2y

0/2=y

0=y