Systems of Linear Functions in Financial Contexts — Quiz
Question 10 • Financial Math
Kaitlyn and a friend decide to share the cost of a subscription service. Kaitlyn pays twice as much as her friend. If the total cost of the subscription is $30 , the system of equations representing the scenario is: x plus y is equal to 30 x is equal to 2 y x represents the amount paid by Kaitlyn and y represents the amount paid by her friend. Which of the following statements correctly interprets the y -intercept of equation x plus y is equal to 30 ?
Answer
A
The y -intercept represents the total amount both Kaitlyn and her friend combined would pay for the subscription.
B
The y -intercept represents Kaitlyn's friend paying the entire subscription cost of 30 dollars while Kaitlyn pays nothing.
C
The y -intercept suggests that if Kaitlyn's friend pays 30 dollars, Kaitlyn would also pay 30 dollars.
D
The y -intercept indicates that Kaitlyn's friend's contribution is half the total subscription cost.