Can someone check these Geometric Transformations, none of them require Calculations.
2.A reflection across the the line y = x
A, B,C [3 -2 1] A',B',C' [-3 -2 -1]
[1 0 5] [-1 0 -5]

4.A dilation twice the original size.
A,B,C 2 [3 -2 1] A',B',C' [6 -4 2]
[1 0 5] [2 0 10]

Question

Can someone check these Geometric Transformations, none of them require Calculations. 
2.A reflection across the the line y = x
A, B,C [3   -2    1]       A',B',C' [-3   -2   -1]
            [1    0   5]                      [-1    0    -5]




4.A dilation twice the original size. 
A,B,C  2   [3    -2    1]         A',B',C'  [6    -4     2]            
                 [1     0    5]                       [2     0     10]

anonymous · Answer

@amistre64

anonymous · Answer

In matrix form, write the coordinates of each image of the triangle with vertices A(3,1) B(-2,0), and C(1,5).

amistre64 · Answer

4 makes sense

amistre64 · Answer

if we reflect about y=x ... then (a,b) becomes (b,a)

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