M′N′O′P′ has vertices at M′(3, 4), N′(4, 4), O′(4, 5), and P′(3, 5). The center of dilation is the origin. MNOP has vertices M(7.5, 10), N(10, 10), O(10, 12.5), and P(7.5, 12.5). What is the algebraic rule of this dilation? Express any numbers in the rule for the dilation exactly. Any fractions should be in simplest form.

The algebraic rule that describes the situation is