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Rufina [12.5K]
3 years ago
7

A line segment has endpoints at (4.-6) and (0,2).

Mathematics
2 answers:
slava [35]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (4, - 6) and (x₂, y₂ ) = (0, 2)

m = \frac{2+6}{0-4} = \frac{8}{-4} = - 2

---------------------------------------

Find the midpoint using the midpoint formula

M =( \frac{x_{1}+x_{2}  }{2} , \frac{y_{1}+y_{2}  }{2} )

    = \frac{4+0}{2} , \frac{-6+2}{2} ) = (2, - 2 )

-----------------------------------------------

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-2} = \frac{1}{2}

----------------------------------------------

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = \frac{1}{2} , thus

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute (2, - 2) into the partial equation

- 2 = 1 + c ⇒ c = - 2 - 1 = - 3

y = \frac{1}{2} x - 3 ← equation of perpendicular bisector

marysya [2.9K]3 years ago
3 0

Answer:

  • -2
  • (2, -2)
  • 1/2
  • y= 1/2x - 3

Step-by-step explanation:

Points given: (4, -6) and (0, 2)

Slope intercept form of the line going through the given pints:

y= mx+b

  • m= (y2-y1)/(x2-x1)= (2+6)/(0-4)= -2  slope is -2

y= -2x+b ⇒ -6= -2*4+b ⇒ b= 8-6= 2 ⇒ y= -2x+2

  • Mid point= (x1+x2)/2, (y1+y2)/2= (4+0)/2, (-6+2)/2= (2, -2)

The slope of the perpendicular bisector is the negative reciprocal of the line segment which it is dividing:

  • m'= -1/m= -1/-2= 1/2

Equation of perpendicular bisector:

  • y= 1/2x+b

It passes through the mid point: (2, -2), so

  • b= y - 1/2x= -2 - 1/2*2= -2 -1= -3

So the equation of perpendicular line:

  • y= 1/2x - 3
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