Question

Which rule represents a dilation with respect to the origin?

D1.8(5, 10) = (9, 14)
D1.8(5, 10) = (9, 18)
D1.8(5, 10) = (13, 18)
D1.8(5, 10) = (13, 26)

Answer 1

when a point is dilated with respect to the origin, both its x and y coordinate get multiplied by the same value

so, for each point, divide (new y-coordinate) / (old y-coordinate) and (new x-coordinate) / (old x-coordinate). the correct answer choice has both of these fractions equal.