liljj1421
  • liljj1421
explain how to write a function rule from the table below. then write a function rule. |x|2|4|6| |y|1|0|-1|
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
its the 2nd graph

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anonymous
  • anonymous
put x =0 => y=-4
anonymous
  • anonymous
then put y=0 => x=+12
anonymous
  • anonymous
c
liljj1421
  • liljj1421
@HackberryAbby18
liljj1421
  • liljj1421
@Thesmarterone @HackberryAbby18 @grex10
liljj1421
  • liljj1421
I need help on the first and last question.
liljj1421
  • liljj1421
@Omar_Elboredy
liljj1421
  • liljj1421
please
liljj1421
  • liljj1421
@prettypink_mega
liljj1421
  • liljj1421
explain how to write a function rule from the table below. then write a function rule. |x|2|4|6| |y|1|0|-1
liljj1421
  • liljj1421
witch graph represents the linear function y=3*x+1 4 attachments 913045731201394608am7899723053.jpg 913045731201394608am7899723053.jpg 913045731201394608am13492647082.jpg 913045731201394608am13492647082.jpg 913045731201394608am15533028022.jpg 913045731201394608am15533028022.jpg 869973731201315229pm4962020422.jpg 869973731201315229pm4962020422.jpg
liljj1421
  • liljj1421
http://assets.openstudy.com/updates/attachments/5569f993e4b0c4e453f94a81-liljj1421-1433020480653-869973731201315229pm4962020422.jpg
anonymous
  • anonymous
I 'll write step-by-step but stay calm ! :)
liljj1421
  • liljj1421
I just need help with the bottom two
anonymous
  • anonymous
K, you know equation of line ?
liljj1421
  • liljj1421
no
anonymous
  • anonymous
K, dun worry , first you need to know that any line has an equation of the form : \[y = mx +c\] ; where m represents the slope of that line and c is the intercept part with the y-axis , K ? |dw:1433027916301:dw|
liljj1421
  • liljj1421
I know that part
liljj1421
  • liljj1421
you don't have to explain it if you don't want to
anonymous
  • anonymous
So nw wat ? We find the slope "m" of this equation , to calculate slope you can pick two points from the table randomly and name them P1 and P2 , suppose we chose these two points from the given table , P1 >> (2,1) & P2(6,-1) So to calculate the slope we use this : \[slope = \frac{ y _{2} - y _{1} }{ x _{2} - x _{1} }\] Where these are the x' and y's of the picked points so for our tabel, \[slope = \frac{ -1 - 1 }{ 6 - 2 } = -\frac{ 1 }{ 2 }\] So nw we get m , subs. with this value into the equation .. \[y = -\frac{ 1 }{ 2 } x + c\] nw to get "c" what we do ? We easily subs. by any point from the two points we just picked and get the c ! so nw, \[1 = -\frac{ 1 }{ 2 } * 2 + c\] Nw what ? It's "c = 2" :D So the equation(aka function) will be : \[y = -\frac{ 1 }{ 2 } x + 2\] To be sure that this is the equation .. just dip the third point into the equation and see what happened .. It's ok ! :D Let me know if you got it :)
anonymous
  • anonymous
For the second question could U plz upload 'em again ? :)
liljj1421
  • liljj1421
so then what is x?
liljj1421
  • liljj1421
http://assets.openstudy.com/updates/attachments/5569f993e4b0c4e453f94a81-liljj1421-1433020480653-869973731201315229pm4962020422.jpg
liljj1421
  • liljj1421
the question is witch graph represents the linear function y=3*x+1
anonymous
  • anonymous
Plz show me the 4 graphs U gave me only 1 ! :D
liljj1421
  • liljj1421
http://assets.openstudy.com/updates/attachments/5569f993e4b0c4e453f94a81-liljj1421-1433020480653-869973731201315229pm4962020422.jpg
anonymous
  • anonymous
Give me the whole question plz :) You just resend the same pic every time ! :D
liljj1421
  • liljj1421
it the 24th chat going up it wont let me

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