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Kazeer [188]
3 years ago
5

PLZ HELP! WILL MAKE A BRAINLIST Which types of dilation are the given scale factors?

Mathematics
1 answer:
attashe74 [19]3 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

For a given scale factor k

If k > 1 then expansion

If k < - 1 then expansion in the opposite direction

If 0 < k < 1 or - 1 < k < 0 then contraction

k = - 2 ← expansion in opposite direction

k = 1.5 ← expansion

k = \frac{1}{4} ← contraction

k = - \frac{6}{7} ← contraction

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------------------------------------------------------------
Define the two numbers
-----------------------------------------------------------
Let the first number be x.
Let the second number be y.

------------------------------------------------------------
Form equations and solve x and y
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x + 2y = 14 ------------------ (1)
2x + y = 31 ------------------ (2)

------------------------------------------------------------
Equation (1) x 2
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2x + 4y = 28  ---------------(1a)

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Equation (1a) - 2
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3y = 28 - 31
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------------------------------------------------------------
Substitute y = -1 into (1)
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Answer: x =16, y = -1
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