Asked by Traveling Girl
What is the distance from the point (-1, -3) to the line y = 2?
How do i do this?
How do i do this?
Answers
Answered by
Traveling Girl
In ABC, what is the angle opposite ? I also need help with this one.
Answered by
MathMate
In general, the distance of the point
P0 : (x0,y0)
from the line
L : ax+by+c = 0
is given by:
Distance = |ax0+by0+c|/sqrt(a²+b²) ...(1)
where the pair of | | in the numerator represents the absolute value.
In the given case,
P0 : (-1,-3)
or x0=-1, y0=-3
and
L : y - 2 = 0
or a=0, b=1, c=-2
Substitute these values in (1) to get the distance required.
P0 : (x0,y0)
from the line
L : ax+by+c = 0
is given by:
Distance = |ax0+by0+c|/sqrt(a²+b²) ...(1)
where the pair of | | in the numerator represents the absolute value.
In the given case,
P0 : (-1,-3)
or x0=-1, y0=-3
and
L : y - 2 = 0
or a=0, b=1, c=-2
Substitute these values in (1) to get the distance required.
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