Question

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


4
5
6

Answer 1

So you would replace the 'x' you see with -5...so you would have

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

what is -5 + 1?

Answer 2

-4

Answer 3

Right...and the absolute value of that is ?

Answer 4

It's just important to remember to do the absolute value after you do the calculation

Answer 5

Absolute value turns a negative number into a postive number.

Answer 6

4

Answer 7

There's your answer bud

Answer 8

If f(x) is a function and f(1) = 5, then which of the following could not be true?


f(1) = 1
f(2) = 1
f(5) = 5

Answer 9

wouldnt it be B

Answer 10

Not quite....for every x-value you put in you HAVE to have 1 unique output....so for each x you put in you need to only have 1 y that comes out...so if we know x = 1 comes up with 5...then x = 1 cannot also be 1....the graph will not pass the vertical line test

Answer 11

sooo C

Answer 12

Sooo A.

if f(1) = 5
f(1) cannot = 1 as well

Answer 13

ohhhhh ok

Answer 14

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

F(-5) = |-4|

F(-5) = 4


Reread the rule of absolute