Question

Find f(-5) if f(x) =|x+1|

Answer 1

To solve this replace x with -5 like so...

f(-5) = | - 5 + 1 |

First solve inside the absolute value bars

f(-5) = | - 4 |

The absolute value bars mean that you must take the positive number of the value inside the bars...

The positive number of -4 is 4 so...

f(-5) = 4

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer 2

Answer: $f(-5)=4$

Step-by-step explanation:

Given an Absolute value function $f(x)=|x|$, it is important to remember that  the absolute value of "x" is the distance from zero to "x", therefore:

$x\geq0$

In this case you have this Absolute value function:

$f(x) =|x+1|$

In order to find $f(-5)$ it is necessary to substitute $x=-5$ into this function.

Therefore, you get:

 $f(-5) =|-5+1|\\\\f(-5) =|-4|\\\\f(-5)=4$