Verify that A(2, 7) is not a point on the line x + 2y + 2 = 0. - Vidyadip

Question

Verify that A(2, 7) is not a point on the line x + 2y + 2 = 0.

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Answer

Given equation is $x+2 y+2=0$.
Substituting $x=2$ and $y=7$ in L.H.S. of given equation, we get
$
\begin{aligned}
& \text { L.H.S. }=x+2 y+2 \\
& =2+2(7)+2 \\
& =2+14+2 \\
& =18 \\
& \text { # R.H.S. }
\end{aligned}
$
$\therefore$ Point A does not lie on the given line.

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