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Neko [114]
3 years ago
12

I need help please.

Mathematics
1 answer:
algol [13]3 years ago
6 0

Answer:

x-9

Step-by-step explanation:

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May I please get the answers to the first 4 of these problems?
Ugo [173]
Given:
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B(1,-2)
C(3,-5)
D(7,-1)

1) reflect across x=-4
essentially calculate the difference between the x=-4 line and Px and "add" it in the other direction to x=-4
A(-4-(3-(-4)),0)=A(-11,0)
B(-4-(1-(-4)),-2)=B(-9,-2)
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D(-4-(7-(-4)),-1)=D(-15,-1)

2) translate (x,y)->(x-6,y+8)
A(-3,8)
B(-5,6)
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D(1,7)

3) clockwise 90° rotation around (0,0), flip the x&y coordinates and then decide the signs they should have based on the quadrant they should be in
A(0,-3)
B(-2,-1)
C(-5,-3)
D(-1,-7)

D) Dilation at (0,0) with scale 2/3, essentially multiply all coordinates with the scale, the simple case of dilation, because the center point is at the origin (0,0)
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B((2/3)*1,(2/3)*-2)=B(2/3,-4/3)
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D((2/3)*7,(2/3)*-1)=D(14/3,-2/3)
7 0
3 years ago
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