Question

anybody know how to do algebraic functions. i struggle with it.

Answer 1

ya shoot

Answer 2

well can you explain how it works please.

Answer 3

well first provide an example cuz you are pretty vague

Answer 4

Do you still need help?

Answer 5

well ok

Answer 6

brb

Answer 7

sure ... *grabs some popcorn*

Answer 8

ok so lets start with linear functions how does that work.

Answer 9

https://www.khanacademy.org/math/algebra/algebra-functions
Try this!

Answer 10

also notations and graphs

Answer 11

Linear functions are in the format of y=mx+b
m is the slope
b is the y-intercept which is the point on the y-axis where the function intercepts

Answer 12

khan academy lol. my dad always tells me to use that lol and thanks

Answer 13

how about the notations though?

Answer 14

When you graph linear functions the shape of the graph will be a line
But depending on the slope thats how steep it will be

Answer 15

Lol your welcome! and hang on I'll find that too

Answer 16

What notations are u looking for
y=mx+b is the equation of a liinear function

Answer 17

hmmm ok

Answer 18

http://en.wikipedia.org/wiki/Algebraic_notation

Answer 19

well its talking about grapghed noations

Answer 20

ask me a specific question and we can go from there

Answer 21

ok

Answer 22

for example i have to graph this

Answer 23

c = 120 + 5x written using function notation.

Answer 24

anyone there.. @exaplme above

Answer 25

example*

Answer 26

i lost connection...

Answer 27

ok so basic function notation is as follows
we refer to a function/equation as f(x) which in real terms is another way of saying y or in this case c
c=120+5x
We replace the c with f(x)
so f(x)=120+5x
F(x) just means that the c is dependent on the x
So for example when x=1 then c=125
when x=0 then c=120
So as you can see our c depends on the x. We plug in our x value to find what c equals Therefore in general we refer to the answer as f(x)
Meaning its a function that is dependent on x
so f(1) means find what the function is when x=1. Basically replace x with 1 and solve
so f(1)=120+5(1)=125
and f(0)=120+5(0)=120
Do you follow?

Answer 28

yeah i lost connection but im back now

Answer 29

let me read it real quick

Answer 30

lol ya i just posted it .... I wrote a long thing

Answer 31

ok

Answer 32

but just wondering is there a way to graph this?

Answer 33

ya not sure if you followed. Maybe I can find a video that explains this concept better

Answer 34

and yeah ik about the replacing of the 1 and stuff.

Answer 35

yes so basically we replace c with f(x)
So f(x)=120+5x
And now what we are gonna do is choose a couple of points that we would like to plot
Lets choose x =-2,-1,0,1,2
So we are gonna start with x=-2
f(-2)=120+5(-2)=120-10=110 so our first point is at (-2,110)
f(-1)=120+5(-1)=120-5=115 so our second point is at (-1,115)
f(0)=120+5(0)=120 So our third point is at (0,120)
f(1)=120+5(1)=120+5=125 So our fourth point is at (1,125)
f(2)=120+5(2)=120+10=130 So our fifth point is at (2.130)
So graph these 5 points on a coordintae grid and then a draw a line connecting these points

Answer 36

ok thanks

Answer 37

idk why i keep losing connection

Answer 38

but thanks

Answer 39

lol do you get it??? I can show you how to graph..

Answer 40

for your help.

Answer 41

Ya openstudy kinda sucks :D

Answer 42

Do you follow or you need some more explanation?

Answer 43

no im good