In 2005, Kailee had $500 in her savings account. In 2015, she had
$1,250 in her savings account. Using a linear model, what does the y-
intercept represent if x is the number of years since the year 2000?
A. Kailee had $500 in her savings account in the year 2000.
B. Kailee had $125 in her savings account in the year 2000.
C. Kailee saved $75 each year.
D. Kailee saved $50 each year.

B. Kailee had $125 in her savings account in the year 2000.

Step-by-step explanation:Let

Let

x ----> the number of years since the year 2000

y  ---> amount in her savings account

we know that

The year 2000 represent x=0

so

2005 represent x=5 years

2015 represent x=15 years

we have the ordered pairs

(5,500) and (15,1,250)

Find the slope

The formula to calculate the slope between two points is equal to

substitute

Find the equation of the line in slope intercept form

we have

point (5,500)

substitute and solve for b

therefore

The y-intercept is $125 (amount of money in the saving accounts in the year 2000)

20

step-by-step explanation: