Question

amina opens a savings account. she starts her savings account with 20 dollars she got as a gift for her birthday. each week she adds 15 dollars to her account. this graph represents the amount in the account, y, after x weeks. what does the vertical intercept of 20 mean in this problem? the line crosses the vertical axis at the point (0, 20). the vertical intercept is 20. a vertical intercept of 20 tells us that after 0 weeks, amina had dollars in her account.

Explanation:

The vertical intercept corresponds to the value of $y$ when $x=0$. Here, $x$ is the number of weeks, so $x=0$ means the start of the account, before any weekly deposits. The problem states Amina started with $20$ dollars.

Answer:

20

A vertical intercept of 20 tells us that after 0 weeks, Amina had $\boldsymbol{20}$ dollars in her account.