Question

Check which of the following are solutions of the equation $x-2y=4$:

• A. $(0,2)$
• B. $(2,0)$
• C. $(4,0)$
• D. $(1,1)$

Answer 1

Answer: (C)

$(4,0)$

Consider the given equation,

$x-2y=4$

Part (a) Put $x=0$ and $y=2$.

$0-2\times 2=4$

$-4\ne 4$

Hence, this not solution of given equation

(b) Put $x=2,y=0$,We get

$2\ne 4$

This is not solution.

(c) put $x=4,y=0$

We get $4=4$

Hence,this solution of given equation.

(d) Put $x=1$ and $y=1$, we get

$-1\ne 4$

Hence, this not solution of given equation.