Find the distance from point A to the given line. Round your answer to the nearest tenth. y=-4x A(6,-2)
the distance is about ___ units.
PLEASE HELP WILL GIVE POINTS
Answers
Answer:
Find the distance between (-1, 1) and (3, 4).
This problem is solved simply by plugging our x- and y-values into the distance formula:
D=(3−(−1))2+(4−1)2−−−−−−−−−−−−−−−−−−√=
=16+9−−−−−√=25−−√=5
Sometimes you need to find the point that is exactly between two other points. This middle point is called the "midpoint". By definition, a midpoint of a line segment is the point on that line segment that divides the segment in two congruent segments.
If the end points of a line segment is (x1, y1) and (x2, y2) then the midpoint of the line segment has the coordinates:
(x1+x22,y1+y22)
Given : point A ( 6 , - 2)
line y = - 4x
To Find: distance from point A to the given line.
Solution:
Distance of point P (x₁ , y₁ ) from the line Ax + By + C = 0
is given by
| (Ax₁ + By₁ + C)/(√(A² + B²)) |
point A ( 6 , - 2)
x₁= 6 , y₁ = - 2
y = - 4x
=> 4x + y = 0
A = 4 , B = 1 , C = 0
Distance = | (4(6) + 1(-2) + 0)/(√(4² + 1²)) |
= | (22)/ √17 |
= 22√17/ 17
= 5.3
distance from point A to the given line is about 5.3 units.
Learn More:
Find the coordinates of the midpoint of the line segment joining P(0,6) and Q(12,20).
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If P (-1,1) is the midpoint of the line segment joining A(-3,b) and B (1 ...
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