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EastWind [94]
3 years ago
5

For the given line segment, write the equation of the perpendicular bisector.

Mathematics
1 answer:
natta225 [31]3 years ago
3 0

Answer:

y=-0.8x-4.7

Step-by-step explanation:

Let

A(-6,-4), B(-2,1)

we know that

The perpendicular bisector pass through the midpoint of AB

step 1

Find the midpoint AB

M=((-6-2)/2,(-4+1)/2)

M=(-4,-1.5)

step 2

Find the slope of the given line AB

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute

m=\frac{1+4}{-2+6}

m=\frac{5}{4}

step 3

Find the slope of the perpendicular bisector

we know that

If two lines are perpendicular, then  the product of their slopes is equal to -1

m1*m2=-1

we have

m1=\frac{5}{4}  ----> slope of the given line

substitute in the formula

\frac{5}{4}*m2=-1

m2=-\frac{4}{5}=-0.8

step 4

Find the equation of the perpendicular bisector

we know that

The equation of the line into point slope form is equal to

y-y1=m(x-x1)

we have

m=-0.8

M=(-4,-1.5)

substitute

y+1.5=-0.8(x+4)

y=-0.8x-3.2-1.5

y=-0.8x-4.7

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If the coordinates of point a are -3 and 2 and the coordinates of point B are 7 and 6 the x-intercept of CD is what
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Answer:

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Step-by-step explanation:

If the coordinates of the first point is (-3, 2) and the coordinates of the point B are (7, 6) then we need first to find the equation of the line CD:

We know that the general equation of the line is:

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In this case:

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Then y = 5/2(x+3) + 2 = 0

Then:

x = -4/5 - 3 = -19/5

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