## anonymous one year ago Could someone explain how you graph a function? Giving an example would help me a lot, thank you.

1. Nnesha

with the pencil :P welcome to open study ! first why the cat in the profile pic isn't smiling , TheSmilingCat?? and linear function ??

2. anonymous

lol, thanks for replying, but it isn't smiling because smiling is too mainstream ^_^. Also, yes i am working on linear function

3. Nnesha

aww :( alright y =mx+b linear equation where m is slope (rise /run) and b is y-intercept lets say we have y = 3x +4 where 3 is slope and b is y-intercept

4. Nnesha

to graph linear function we should start with the y-intercept y-intercept is a point where line intersect y-axis |dw:1442182449985:dw|

5. anonymous

I remember going over this in class, i completely forgot about the rise over run, thank you so much

6. Nnesha

$\huge\rm y=\color{ReD}{3}x+\color{blue}{4} ~~~~y=\color{Red}{m}x+\color{blue}{b}$ m= slope b= y-intercept

7. Nnesha

so start with y-intercept which is 4 in this equation so draw a point at 4 |dw:1442182609050:dw|

8. Nnesha

now slope is =3 3 is same as 3/1 $\huge\rm \frac{ 3 }{ 1 } =\frac{ rise }{ run }$ so i go up 3 unit and then right one |dw:1442182704073:dw| then just draw a line

9. anonymous

Okay, i took notes this time, just in case i forget again, thank you so much!

10. Nnesha

my pleasure feel free to ask question if you didn't get it! btw hint if slope is negative then line should decrease (start from 3nd quadrant to 4th) if slope is positive then line should increase (Start from 3rd quadrant to 1st ) :=)

11. anonymous

okay :D

12. Nnesha
13. anonymous

lol so cute

14. Nnesha

change the pic or make a new acc with the TheSadCAt user name jk haha!