Which of the following quantities are directly proportional?

is this proportional?

the area of a rectangle and its length, if its width is 6 cm.
pls

Step-by-step explanation:

The area of a rectangle is

Where is length and is width.

Now, if its width is 6 cm, then

Now, this equation states that the area of the rectangle and its length are directly proportional, because if we increase the length, then the area will be also increased. Remember that a direct proportion between two magnitudes is where they both increase or decrease at the same time.

Therefore, they are directly proportional.

squares, rhombus, rectangles