Question

what is f(-4)?

Answer 1

http://static.k12.com/calms_media/media/1417000_1417500/1417263/2/93073a8f51b2e97e7006c8b2cd39fb0d594d5d89/MS_PA_130905_170069.jpg

Answer 2

A.
–5

B.
–2

C.
2

D.
5

Answer 3

a=-5 and b=-2

Answer 4

f(x) = f(-4)

so what is the value of y when x= -4 ?

Answer 5

i dont know

Answer 6

So basically, find where x = -4

and then slowly go down and find the point where it intersects the line. The point should be (-4, y)
and we are looking for y :)

Answer 7

4?

Answer 8

i ment -4

Answer 9

So first lets find where x =-4

That would be at the point (-4,0) but that isn't on the line so we have to find when x still equals -4 and also at the same time has a point that is on the line

Answer 10

please help i have no idea

Answer 11

So here is the point (-4,0) http://prntscr.com/67gizh

Answer 12

thats the answer right

Answer 13

Not yet :)

Answer 14

ok

Answer 15

So now just move that red dot lower and lower and lower until it touches the line.

Answer 16

And that point would be (-4,??)

Answer 17

-2

Answer 18

Exactly, and that is your answer :)

Answer 19

thanks so much

Answer 20

Given f(x) = x – 10, what is f(–7)?