Asked by elizabeth
what is the equation for the function table
X= 4 5 6 7 12
Y= -2 0 2 4 ?
X= 4 5 6 7 12
Y= -2 0 2 4 ?
Answers
Answered by
Lily
What is the y-intercept?
Answered by
Lily
Do you need to find the ? as well?
Answered by
Reiny
Pick any two points to calculate the slope as 2
(or notice that for every increase of 1 in the x, the y increases by 2, so rise/run = 2/1 )
so equation is y = 2x + b
plug in (5,0)
0 = 2(5) + b
b = -10
so
y = 2x -10
then if x=12
y = 24-10 = 14
(or notice that for every increase of 1 in the x, the y increases by 2, so rise/run = 2/1 )
so equation is y = 2x + b
plug in (5,0)
0 = 2(5) + b
b = -10
so
y = 2x -10
then if x=12
y = 24-10 = 14
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