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

True:  f(4)=5

C is correct.

Step-by-step explanation:

If point (4, 5) is on the graph of a function.

Point on graph means this satisfies the graph or function.

Point (4,5) is on graph of function.

If we put x=4 then we get y=5

Because x is input value and y is output value of a function.

As we know, y=f(x)

Put x=4 and y=5

We get,

f(4) = 5

Hence, The equation must be true f(4)=5

the answer is true.

step-by-step explanation:

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