Asked by Anabel

Find the relationship between x and y when x is partly constant and partly varies with y
When y = 3, x= 7 and when y = 6, x= 9
Answered by Double Pi
Hm, what is the question here? I'm good with this stuff but I need to know more if you want help.
Answered by Damon
well, assume linear maybe
x = m y + b it gives them that way
7 = 3 m + b
9 = 6 m + b
===============
14 = 6 m + 2 b
9 = 6 m + b
--------------------subtract
5 = b
then
9 = 6 m + 5
6 m = 4
m = 2/3
so
x = (2/3) y + 5
3 x = 2 y + 15
Answered by oobleck
x = my+b
using the data points, you have
3m+b = 7
6m+b = 9
so solve for m and b
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