anonymous
  • anonymous
I need help in Transformations II help!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
legendarynikki A triangle with vertices at (1, 2), (–1, –6) and (7, –2) is translated five units to the left and 7 units upward. The coordinates of the translated triangle are: Select one: a. (6, 9), (4, 1) and (12, 5) b. (–4, –5), (–6, –13) and (2, –9) c. (6, –5), (4, –13) and (12, –9) d. (–4, 9), (–6, 1) and (2, 5) A convex polygon which has rotational symmetry of 180° must have which characteristic? Select one: a. At least one line of symmetry b. All side lengths equal c. An even number of sides d. All angles equal
anonymous
  • anonymous
I think 2 is C
welshfella
  • welshfella
For each coordinate is hanged as follows x ---> x -5 and y-----> y + 7

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anonymous
  • anonymous
okay??
welshfella
  • welshfella
* changed ( question A)
anonymous
  • anonymous
i dont get it
welshfella
  • welshfella
(x , y) changes to (x-5, y+7)
welshfella
  • welshfella
so for instance the point (0,5) is transformed to (5,12)
anonymous
  • anonymous
um okay
welshfella
  • welshfella
so in QUestion A what is the point (1,2) transformed to?
anonymous
  • anonymous
i dont know
welshfella
  • welshfella
sorry i made a mistake (0,5) becomes (0-5, 5+7) = (-5,12)
welshfella
  • welshfella
(1, 2)-- > ( 1-5, 2 + 7) = (-4, 9)
anonymous
  • anonymous
-6,1
welshfella
  • welshfella
what point is that (-6,1)???
anonymous
  • anonymous
i dont know
anonymous
  • anonymous
im trying to figure this out but it makes no sense to me
welshfella
  • welshfella
OK we have one of the vertices (1,2) in question 1 a move of 5 to the left transforms the x value (1) to 1 - 5 = -4 Moving to the left is negative movement OK?
anonymous
  • anonymous
ok
welshfella
  • welshfella
A movement up or down changes the value of the y coordinate so the 2 in (1,2) becomes 2 + 7 = 9 ( that is a move of 7 units up the graph)
welshfella
  • welshfella
so ( 1 , 2) becomes (-4 , 9)
anonymous
  • anonymous
oh okay
welshfella
  • welshfella
So if you look at the options in question A you'll see which one is correct
anonymous
  • anonymous
D?
welshfella
  • welshfella
right
anonymous
  • anonymous
is my second question right?
anonymous
  • anonymous
A convex polygon which has rotational symmetry of 180° must have which characteristic? Select one: a. At least one line of symmetry b. All side lengths equal c. An even number of sides d. All angles equal i put C
welshfella
  • welshfella
to be honest I'm not sure about that one.
welshfella
  • welshfella
a rectangle has rotational symmetry of 180 so I think C is right.
welshfella
  • welshfella
yea i'm pretty sure about that. Not 100% though..
welshfella
  • welshfella
thats the best i can do with that one.

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