Find the equation of the line that is perpendicular to y = –2x + 5 and contains the point
1 answer:
The given equation is:
To find the line perpendicular to it, we interchange coefficients and swi tch the signs of one coeffi cient .
The equation to a line perpendicular to it is:
$ 2y-x=c$
where, $c$ is some constant we have determine using the condition given.
It passes through $(2,-1)$
Put the point in our equation:
$2(-1)-(2)=c$
$c=-2-2$
$c=-4$
The final equation is:
$\boxed{ 2y-x=-4}$
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