IM1 Unit 2 Quiz Corrections

Match the vocabulary words with the correct image

• y-intercept
  (growth factor)

• 
• discrete domain

• 
• continuous domain

• 
• common ratio
  (growth factor)

• 

The graph shows a relationship between the number of bracelets sold and the amount of money earned. This graph is​ (a)   since we are ​ (b)   the number of bracelets sold.

• discrete
• counting
• continuous
• measuring

Answer explanation

Discrete functions are used for things that can be counted. For example, the number of televisions or the number of puppies born.

The graph shows a relationship between the number of weeks and the weight of a growing puppy. This graph is​ ​ (a)   since we are ​​ (b)   the weight of the puppy over time.

• continuous
• measuring
• discrete
• counting

Answer explanation

Continuous data usually requires a measuring device. (Ruler, stop watch, thermometer, speedometer, etc.)

The puppy is growing in between the weeks, so even though we only measure at 0, 4, and 8 weeks, the puppy is growing in between the weeks, so we connect the points.

Label the diagram

a

common ratio

horizontal asymptote

first term

y-intercept

Answer explanation

y intercept is the point where the line or curve intersects the y-axis

• 2
• 3
• x

Answer explanation

Scientists discovered that Folsom Lake is contaminated with bacteria!  When biologists started measuring the bacteria, there was an area of 4 square feet of bacteria in the lake. This contaminated area is doubling  (multiplying by 2) every day!  Complete the table to represent the scenario.

a

b

c

16

20

12

32

64

Answer explanation

the area is DOUBLING (multiply by 2) so the f(x) values should be multiplying by 2

Scientists just discovered that Lake Tahoe is contaminated with bacteria!  When biologists started measuring the bacteria, there was an area of 4 square feet of bacteria in the lake. This contaminated area is doubling  (multiplying by 2) every day! 

Which graph correcting represents the scenario?

• 
• 
• 
• 

Answer explanation

we are measuring, so the graph should be continuous

we are multiplying, so the graph should be an exponential curve

Scientists just discovered that Lake Tahoe is contaminated with bacteria!  When biologists started measuring the bacteria, there was an area of 4 square feet of bacteria in the lake. This contaminated area is doubling  (multiplying by 2) every day! 

Which equation correctly represents the scenario?

Tags

CCSS.HSF.LE.A.2