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Pre-Algebra 26 Online
OpenStudy (madhatter):

Write a rule for the linear function in the table.

OpenStudy (madhatter):

OpenStudy (madhatter):

I have this big hw thing i have to do and if i fail it then i am done for that is y i am asking for so much help

OpenStudy (anonymous):

its fine, i see the pattern, but idk how to right it as a rule, let me think a little more

OpenStudy (madhatter):

kk its just like the first one

OpenStudy (anonymous):

@jim_thompson5910 can u help find the rule??

OpenStudy (anonymous):

r u trying to find the equation??

OpenStudy (madhatter):

yep

OpenStudy (madhatter):

..... i sure am

OpenStudy (anonymous):

hey, i cant find this one, SRY:(

OpenStudy (madhatter):

oh its fine

jimthompson5910 (jim_thompson5910):

notice as x increases by 1, y decreases by 1

jimthompson5910 (jim_thompson5910):

this means that this function is linear

jimthompson5910 (jim_thompson5910):

slope between the points (1, 3) and (2, 2) m = (y2-y1)/(x2-x1) m = ( 2- 3)/(2-1) m = (-1)/1 m = -1 y-intercept y = mx + b y = -1x + b 3 = -1(1) + b 3 = -1 + b 3 + 1 = b b = 4 m = -1 b = 4 y = mx + b y = -1x + 4 y = -x + 4 So the function is f(x) = -x+4 I'll let you do the checks

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