We want to see if the relationship between the number of weeks and the money put in the jar is linear or not, we will see that this is not a linear equation (it is exponential).
So a linear relation is something like:
y = a*x + b
Note that for any value of x, an increase of 1 unit gives:
y = a*(x+ 1) + b = (a*x + b) + a
So for increases of 1 unit in the x-value, we have increases of "a" units on the y-value.
In the given situation we have:
- In week 1 she puts $1.00 in the jar.
- In week 2 she puts $2.00 in the jar (now the jar has $3.00 in it)
- In week 3 she puts $4.00 in the jar (now the jar has $7.00 on it)
- In week 4 she puts $8.00 in the jar (now the jar has $15.00 on it)
and so on.
Writing that as points we have:
(1, $1)
(2, $3)
(3, $7)
(4, $15)
Notice that for equal increases in the x-value, (increases of 1 unit) we don't equal increases in the y-value (first increases by $2, then by $4, etc...) So this is not a linear equation, this is actually exponential.
If you want to learn more, you can read:
brainly.com/question/19770987