Unit 4 Study Guide Review

Determine whether the set of ordered pairs shown below represents a function.

• Yes, this relationship is a function.

• No, this relationship is a function.

Answer explanation

Remember Functions have only one unique input for every output. No repeating x-values!!!

Tags

CCSS.8.F.A.1

Which of the following statements correctly compares the slopes and y-intercepts of lines r and s?

• The slope of Line r is

  less than the slope of

  Line s, and the y-intercept

  of Line r is

  less than the y-intercept

  of Line s.

• The slope of Line r is

  less than the slope of

  Line s, but the y-intercept

  of Line r is

  greater than the y-intercept

  of Line s.

• The slope of Line r is

  greater than the slope

  of Line s, but the y-intercept

  of Line r is

  less than the y-intercept

  of Line s.

• The slope of Line r is

  greater than the slope

  of Line s, and the y-intercept

  of Line r is

  greater than the y-intercept

  of Line s.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Given the graph and the table, which statement is true?

• The daily increase in

  Mrs. Miller's class is

  $26 more than it is in

  Mr. Taylor's class.

• The daily increase in

  Mrs. Miller's class is

  $14 more than it is in

  Mr. Taylor's class.

• The daily increase in

  Mrs. Miller's class is

  $4 more than it is in

  Mr. Taylor's class.

• The daily increase in

  Mrs. Miller's class is

  $2 more than it is in

  Mr. Taylor's class.

Answer explanation

Use the rise over run method to find the slope from the graph.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Based on the information in the table and the graph, compare the approximate miles per gallon of car M to

car P.

Show your work or explain your answers.

Enter your answers and your work or explanations in the space provided.

Tags

CCSS.6.RP.A.3B

What can we conclude about the triangles on the line shown below?

• The triangles are

  congruent, and they

  have the same slope.

• The triangles are

  similar and they have

  the same slope.

• The triangles are not

  related to each other.

• The triangles are

  similar, but there

  slopes are different.

Answer explanation

Any slope triangle on the line will give you the same slope.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Patrick wants to choose the cheapest option. Which gym should Patrick choose? Why?

• Patrick should choose

  Muscle World. The

  membership fee at

  Muscle World is

  $2.50 less than

  Gorilla Gym's

  membership fee.

• Patrick should choose

  Muscle World. The

  membership fee at

  Muscle World is

  $7.50 less than

  Gorilla Gym's

  membership fee.

• Patrick should choose

  Gorilla Gym. The

  membership fee at

  Gorilla Gym is $7.50

  less than Muscle

  World's membership

  fee.

• Patrick should choose

  Gorilla Gym. The

  membership fee at

  Gorilla Gym is $2.50

  less than Muscle

  World's membership

  fee.

Answer explanation

Better buy= lesser slope

Tags

CCSS.8.EE.B.5

Which table represents a nonlinear function?

• 
• 
• 
• 

Answer explanation

Nonlinear functions does not have the same rate of change.

Tags

CCSS.8.F.A.3

Pierre is buying gourmet chocolate bars for $1.75 each. Which graph correctly shows the cost per chocolate

bar?

• 
• 
• 
• 

Tags

CCSS.8.EE.B.5

Which is the graph of the equation y = 3x?

• 
• 
• 
• 

Answer explanation

If the y-intercept is 0, then the line will cross through the origin.

Which graph is NOT the graph of a function?

• 
• 
• 
• 

Answer explanation

Graphs of functions passes the Vertical Line Test.