Question

For f(x)=5x+4, find f(-1)

Answer 1

-1
Substitute -1 to the x :)

Answer 2

insert x=-1
in the f(x)

Answer 3

iis it like this: 5(-1)+4?

Answer 4

and solve it ....it is very easy

Answer 5

yeah

Answer 6

Yes :)

Answer 7

and it gives me -9 right? :)

Answer 8

nooo

Answer 9

no? :(

Answer 10

5*(-1)=-5+4=-1

Answer 11

i put it on my caculator as 5(-1)+4 and it got me -9

Answer 12

no loll

Answer 13

-1 is multiplied by 5and thn add 4 in it

Answer 14

dang it! i thought i had it, well can you show me how you put it in your caculator? lol

Answer 15

yeah, it's correct that you plug in -1 instead of x, but you don't get -9, lol.

Answer 16

Honestly i'd recommend you not to rely on your calculator for mathematics to some extent. :)
Obviously sometimes its necessary but try to keep it down it helps you think faster :)

Answer 17

ohhh! wow idk how i got -9 at first, i re did it and i got -1

Answer 18

haha okay

Answer 19

Good that you got -1 :)