Question

10) Which of the following situations is an example of direct proportion? *
Option 1: The perimeter p of a square and its side length a.
Option 2: The length l and the width w of a rectangle, given the area remain constant.
Option 3: The number of units of a product that can be purchased given a fixed amount of money, and the unit price of the product.
Option 4: The number of rows m and the number of columns n in which a fixed number of marbles can be arranged.​

Answer 1

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