Mrs. Thompson has calculated that she spends an average of $16.67 per day on expenses.

She has determined that the equation y = -$16.67x + $1,340 represents her average spending habits for one week, where x is number of days that have passed for that week.

What does the y-intercept mean in this equation?

A. the amount she spends per week
B. the amount of money she saves every week
C. the number of days it takes for Mrs. Thompson to spend all her money
D. the amount of money she has at the beginning of the week

Question

Mrs. Thompson has calculated that she spends an average of $16.67 per day on expenses.

She has determined that the equation y = -$16.67x + $1,340 represents her average spending habits for one week, where x is number of days that have passed for that week.

What does the y-intercept mean in this equation?

A. the amount she spends per week
B. the amount of money she saves every week
C. the number of days it takes for Mrs. Thompson to spend all her money
D. the amount of money she has at the beginning of the week

anonymous · Answer

I think it's A. or D. not 100% sure on either. Can someone please double-check for me? Thank you.

anonymous · Answer

D, the y intercept is the last number in the equation. 

the amount she spends per week would be -$16.67x + $1,340, which is y

but y and the y intercept are NOT the same things, if it was asking what y is then it would be A, but because it is asking for the y intercept the answer is D

anonymous · Answer

Wow, you're right. I completely forgot about the original formula and took a glance at "y" at the beginning of the problem and thought it was A. Thank you again! lol