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Inga [223]
3 years ago
12

a line segment has end points (-5, 7) and (4,-3) find the inverse of the line segment and graph both the segment and its inverse

.

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
5 0
Answer

See graph

Step-by-step explanation

The given line segment passes through the point (-5,7) and  (4,-3).

We plot this points and draw a straight line to them to obtain the blue line as shown in the

attachment.

The slope of this line segment is given by the formula

m=\frac{y_2-y_1}{x_2-x_1}

This implies that,

m=\frac{7--3}{-5-4}

m=-\frac{10}{9}

The equation of this line is given by the formula,

y-y_1=m(x-x_1)

y+3=-\frac{10}{9}(x-4)

9y+27=-10(x-4)

9y+27=-10x+40

9y=-10x+13

We now find the inverse by interchanging x and y.

9x=-10y+13

We now make y the subject,

9x-13=-10y

y=-\frac{9}{10}x+\frac{13}{10}

We now plot some points.

When

x=7

y=-\frac{9}{10}\times 7+\frac{13}{10}

y=-\frac{50}{10}=-5

This gives the ordered pair

(7,-5)

Also when

x=-3

y=-\frac{9}{10}\times -3+\frac{13}{10}

y=\frac{40}{10}=4

This gives the ordered pairs,

(-3,4)

We plot these points too and draw a straight line through them to get the red line in the attachment.

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