math
posted by elizabeth on .
what is the equation for the function table
X= 4 5 6 7 12
Y= 2 0 2 4 ?

What is the yintercept?

Do you need to find the ? as well?

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 = 2410 = 14