Interpreting Functions Review

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

• location

• initial value

• total

• constant rate

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?

• She uses 5 eggs for every 2 cakes.

• She started with 47 eggs.

• She uses 47 eggs for every 0 cakes.

• She started with 5 eggs.

What happened during E to F point?

• not moving

• moving at a constant rate

• moving faster than before

• moving more slowly than before

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

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?

• y = 3x + 20

• y = 3 + 20x

• y = -3x + 20

• y = -20x + 3

What is the meaning of the y-intercept?

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

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

• The starting weight of the sand is 1 pound.

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

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

• Candle starts at 9 cm.

• Candle start at 4.5 cm

• Candle starts at 0 cm.

• The candle ends at 5 cm

Which of the two linear functions above has the higher rate of change?  Explain.

• The blue one because it is the most steep.

• The blue one because it is the least steep.

• The green one because it is the most steep.

• The blue one because it is the least steep.

• 0

• -2

• -1

• 1

• -6

• 4

• 6

• -4