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The point
does not lie on the line
. The shortest distance from the point to the line is
units. The equation of the perpendicular line passing through
is
.
Solución

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Como
The Deep Dive
Did you know that the point
can be tested to see if it lies on the line described by the equation
? To check, you simply substitute
and calculate
. You’ll get
. Since -2 does not equal 7, the point does not lie on the line!
Now, if you’re ever asked to find the equation of a line parallel to
that passes through the point
, you’ll know that parallel lines have the same slope! The slope here is 1, so the new line’s equation can be written as
. Using the point
helps you find ‘b’ by substituting the coordinates. Voilà, the equation becomes
!

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