Given that △ABC with a perimeter of 12 inches is translated by the rule T(x,y)⟶(x+4,y−2), what is the perimeter of △A′B′C′?
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to solve for j first you need to cross multiply;
j × 35 = 42 × 55
35j = 2,310
j = 2,310 ÷ 35 (did the inverse operation)
j = 66
Hope that helps :D