Question

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

f(5)=4
f(5,4)=9
f(4)=5
f(5,4)=1

Answer 1

If point (4, 5) is on the graph of a function \( f \), it means that when the input (or x-coordinate) is 4, the output (or y-coordinate) of the function is 5.

This relationship is represented by the equation:

\[ f(4) = 5 \]

So, the correct answer is:

\[ f(4) = 5 \]