Quiz about Interpreting Functions in Context

Question 1

The graph shows the height (cm) of a candle as it burns, what is the y intercept and what does the y-intercept mean?

Accepted Answer

b=9, Candle starts at 9 cm.

Answer

b=9, the candle burns 9 inches per hour.

Answer

b=2, the candle burns 2 inches per hour.

Answer

b = 5, The candle ends at 5 cm

Question 2

Which situation below is representative of y-intercept?

Accepted Answer

Starting your day with $30 in your wallet

Answer

Saving $300 per month

Answer

Spending $3 per ride at the fair

Answer

Paying $2 for parking every day

Question 3

The equation y=10x represents the amount of allowance, y, in dollars, that Jacob receives for doing x hours of chores. Which statement interprets the slope of this equation?

Accepted Answer

Jacob does chores for $10 per hour.

Answer

Jacob does chores for $0 per hour.

Answer

Jacob receives $0 of allowance money before doing any chores.

Answer

Jacob receives $10 of allowance money before doing any chores.

Question 4

Derek works at Subway making $9.25 an hour. The function d(x)=9.25x tells us how much money Derek makes after x hours of working. What is the meaning of d(4)=37?

Accepted Answer

After 4 hours of work, Derek makes $37.

Answer

Derek needs $4 more to have $37 total.

Answer

After working for 4 days, Derek makes $37 total.

Answer

After 4 hours of work, Derek now makes $37 an hour instead of $9.25.

Question 5

You plan to attend the county fair this weekend. Admission to the fair is $5 and the cost per ride is $0.50. Check off ALL of the following that are true.

Accepted Answer

y = 0.5x + 5 will tell me how much I will spend on x rides

Accepted Answer

If I go on NO rides I still have to pay $5 to get in.

Accepted Answer

After 3 rides I will spend $6.50

Answer

After 3 rides I will spend $1.50

Answer

The slope is $5 per ride

Question 6

Ms. Brackemyer is collecting pencils. The function p(x)=5x+12 tells us the total amount of pencils Ms. Brackemyer has after collecting for x number of days. What is the meaning of p(8)=52?

Accepted Answer

After 8 days, Ms. Brackemyer has 52 pencils.

Answer

Ms. Brackemyer starts with 8 pencils and ends with 52.

Answer

Ms. Brackemyer starts with 52 pencils and gets 4 more every day.

Answer

Every day, Ms. Brackemyer gets 4 new pencils until she has 52.

Interpreting Functions in Context

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