An equation of Hamid’s revenue by multiplying the book price by the number of copies sold is x = ny.
<h3>What is an equation?</h3>
The process of equating one thing with another.
Let Hamid’s revenue is $x and the price of book is $y.
If he sold n number of copies.
Then, the general equation will be x = n * y.
Therefore, an equation of Hamid's revenue will be x = ny.
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Answer:

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☆In the gradient formula,
(x1, y1) is the first coordinate and (x2, y2) is the second coordinate.
Answer:
2/16
5/40
Step-by-step explanation: