Rectangle P′R′S′T′ is a dilation of rectangle PRST, and the scale factor is 3.Write an equation for the area of P′Q′R′S′if the sides of the original rectangle PQRS were x and y.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

the answer is d

hope this