What is the range of f (x) ?

{x1-2 x < 4)

{x1-2 < x 54

{y 1-5 < y <-1}

O {y-5 sys-1}

Step-by-step explanation:

f (4) = 42 + 5 = 21, f (-10) = (-10) 2 + 5 = 105 or alternatively f: x → x2 + 5.

The phrase "y is a function of x" means that the value of y depends upon the value of x, so:

y can be written in terms of x (e. g. y = 3x).

If f (x) = 3x, and y is a function of x (i. e. y = f (x)), then the value of y when x is 4 is f (4), which is found by replacing x"s by 4"s.

If f (x) = 3x + 4, find f (5) and f (x + 1).

f (5) = 3 (5) + 4 = 19

f (x + 1) = 3 (x + 1) + 4 = 3x + 7