sammietaygreen
  • sammietaygreen
Use scalar multiplication to determine the coordinates of the vertices of the dilated figure. Then, graph the pre-image and the image of the same coordinate grid. Quadrilateral WXYZ with vertex matrix [-1 5 5 -2] [2 5 3 -5] with a scale factor 3.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Jhannybean
  • Jhannybean
@amistre64
sammietaygreen
  • sammietaygreen
^thank you!! I need help I just don't get it
amistre64
  • amistre64
just multiply it all by 3

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sammietaygreen
  • sammietaygreen
I did that but when I plotted it, it looked nothing like the options?
amistre64
  • amistre64
i cant see what you did from here ...
Jhannybean
  • Jhannybean
Oh so this is how a Jacobian works too,... sort of. Right @amistre64 ? Haha. That's what I initially thought this was.
amistre64
  • amistre64
well, its not a jacobian (thats a cross product type thing) this is just scaling a vector really.
amistre64
  • amistre64
the matrix is made of ordered pairs, and scaling each ordered pair by 3 results in a new scaled pair ...
sammietaygreen
  • sammietaygreen
3 15 15 -6 6 15 9 -12
sammietaygreen
  • sammietaygreen
let me show you guys the answer choices.
sammietaygreen
  • sammietaygreen
because I have no idea what I'm doing wrong lol
amistre64
  • amistre64
[-1 5 5 -2] [2 5 3 -5] [-1(3) 5(3) 5(3) -2(3)] [2(3) 5(3) 3(3) -5(3)] is NOT what youve worked.
amistre64
  • amistre64
you got 2 values off
sammietaygreen
  • sammietaygreen
OHH then do I just plot them??
sammietaygreen
  • sammietaygreen
like how do I plot them
amistre64
  • amistre64
how do you read an ordered pair? (x,y)
sammietaygreen
  • sammietaygreen
like (-3, 6)?
amistre64
  • amistre64
[ [-1(3), 5(3)] [5(3), -2(3)] ] [ [ 2(3), 5(3)] [3(3), -5(3)] ]
Jhannybean
  • Jhannybean
I thought ordered pairs matched vertically,... hm.
sammietaygreen
  • sammietaygreen
yeah, same here^^

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