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# If the point (4, 5) is on the graph of a function, which equation must be true?

# A. f(5) = 4 B. f(5, 4) = 0 C. f(4) = 5 D. f(5, 4) = 1

A point that lies on the graph of a curve must satisfy the equation of the curve.

## Answer: Option C. f(4) = 5 is the correct answer to the problem.

Go through the explanation to understand better.

**Explanation:**

A point is represented in the coordinate form as (x, y).

A function is represented as f(x) = y, where x is the input and y is the output.

Taking the information about the coordinates of points from the question, we get (x, y) = (4, 5)

### Thus, the function corresponding to this point becomes f(4) = 5.

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