The denominator for answer choice d is 7

Which ahows the graph of the solution set of 6x+4y< 12

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

How is working backward similar to solving an equation?