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

f(4) = 5

Explanation:

functions are represented by f(x), so x should be the value in parenthesis and the y value should be what it equals