Quiz about Interpreting Function Relationships

Question 1

Sandra has a $20 itunes gift card and spends $3 each month. Which equation can be used to find how much money Sandra has on her giftcard after x months?

Accepted Answer

y = -3x + 20

Answer

y = 3x + 20

Answer

y = 3 + 20x

Answer

y = -20x + 3

Question 2

Which equation shows the number of bottles left after x days?
A family buys a case of water with 48 bottles and drinks 5 bottles per day.

Accepted Answer

y = 48 - 5x

Answer

y = 48x + 5

Answer

y = -5 + 48x

Answer

y = -5x - 48

Question 3

Dorothy loves to make cakes. The following table shows how the number of eggs that she has left changes as she makes cakes.
What is the meaning of the y-intercept?

Accepted Answer

She started with 47 eggs.

Answer

She uses 5 eggs for every 2 cakes.

Answer

She uses 47 eggs for every 0 cakes.

Answer

She started with 5 eggs.

Question 4

What is the meaning of the y-intercept?

Accepted Answer

Before sand is put in the bucket, it weighs 1 pound.

Answer

The weight in the bucket increases by 1 pound per pound of sand.

Answer

The starting weight of the sand is 1 pound.

Answer

The weight in the bucket decreases by 1 pound per pound of sand.

Question 5

What type of association does this graph have?

Accepted Answer

positive

Answer

negative

Answer

none

Answer

all of the above

Question 6

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

Accepted Answer

18 chapters

Answer

12 chapters

Answer

15 chapters

Answer

21 chapters

Question 7

The equation of the trend line
is y= 1/2x +1. What does the x variable represent?

Accepted Answer

The number of laps

Answer

The amount of time in hours

Answer

The amount of time in minutes

Answer

How long it takes to go 0 laps

Question 8

What is the equation for the line of best fit in the graph pictured?

Accepted Answer

y = 5/3x + 375

Answer

y = 1/3x + 475

Answer

y = 5/3x + 3

Answer

y = 1/3x + 375

Question 9

The equation of the trend line
is y= 1/2x +1
How many laps can a bicycle
make around the park in
23 minutes?

Accepted Answer

44 laps

Answer

12 1/2 laps

Answer

23 laps

Question 10

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 11

The graph shows the candle's height (cm) as it burns (minutes). What does the slope MEAN?

Accepted Answer

The candle burns 2 cm every minute.

Answer

The candle burns 1 cm every minute.

Answer

The candle burns 2 cm every 2 minutes.

Answer

The candle burns 1 cm every 2 minutes.

Question 12

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

Accepted Answer

Candle starts at 9 cm.

Answer

Candle start at 4.5 cm

Answer

Candle starts at 0 cm.

Answer

The candle ends at 5 cm

Question 13

At what rate did the rain fall?

Accepted Answer

2 cm per hour

Answer

¹/₄ cm per hour

Answer

¹/₂ cm per hour

Answer

4 cm per hour

Question 14

Which of the following is another meaning of y-intercept?

Accepted Answer

initial value

Answer

location

Answer

total

Answer

constant rate

Interpreting Function Relationships

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