Mackenzie needs to determine whether the rectangles are proportional. Which process could she use? Check all that apply.

A pre-image rectangle has a length of 4 and width of 3. An image rectangle has a length of 2 and width of 1.5.
She could compare the ratios of the sides of the pre-image to the corresponding sides of the image in the proportion StartFraction 3 Over 1.5 EndFraction = StartFraction 4 Over 2 EndFraction.
She could verify that adding the same number to each side in the pre-image does not result in the corresponding side length of the image.
She could verify that multiplying each side in the pre-image by One-half results in the length of the corresponding side in the image.
She could verify that subtracting the same number to each side in the pre-image does not result in the corresponding side length of the image.
She could just notice that all the sides in the pre-image are whole numbers so all the sides in the image should be whole numbers.

Mackenzie needs to determine whether the rectangles are proportional Which process could she use Check all that apply A preimage rectangle has a length of 4 and class=