Answer:
Step-by-step explanation:
Let
x ----> the number of weeks
y ---> amount of money in the bank
we know that
The linear equation in slope intercept form is equal to
where
m is the slope or unit rate
b is the y-intercept or initial value
Katherine
The slope or unit rate is equal to
The y-intercept or initial value is equal to
The linear equation is equal to
----> equation A
Abbie
The slope or unit rate is equal to
----> is negative because is a decreasing function
The y-intercept or initial value is equal to
The linear equation is equal to
----> equation B
Equate equation A and equation B
Rewrite the terms