Answer:
K = 4
Explanation:
Scale factor of 4: (x,y) => (4x,4y)
J (-2,-4) => J'(-8,-16) which is (4x-2,4x-4)
K(-5,0) => K'(-20,0) which is (4x-5, 4x0)
L(3,1) => L'(12,4) which is (4x3,4x)
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