Topic 3: Use Functions to Model Relationships
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
+2
Standards-aligned
Hollie Whiteman
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9 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Is the relation shown below a function? Use the graph to justify your answer.
No, the relation is not a function because the input 2 is paired with two different outputs (0 and 2).
Yes, the relation is a function because each input has only one output.
No, the relation is not a function because the input 0 is paired with two different outputs (2 and 4).
Yes, the relation is a function because the input 2 is paired with two different outputs.
Tags
CCSS.8.F.A.1
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Consider the two functions below. Which one of these functions is linear? What is its equation? Enter any answers to two decimal places.
Function A
x: 3, 6, 9, 12, 15
y: 5, 10, 15, 20, 25
Function B
[Graph of a curve]
Which of the following is correct?
Function A is linear. Its equation is y = 1.67x + 0.
Function B is linear. Its equation is y = 2x + 1.
Function A is linear. Its equation is y = 3x + 2.
Function B is linear. Its equation is y = 1.67x + 0.
Tags
CCSS.8.F.A.3
3.
DROPDOWN QUESTION
1 min • 1 pt
Which function has a greater rate of change?
Function A has a rate of change of (a) and Function B has a rate of change of (b) , so Function (c) has a greater rate of change.
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Select all the ways that describe the graph of the function in interval 2.
The function is increasing.
The slope is negative.
The function is decreasing.
The function is constant.
The slope is positive.
Tags
CCSS.8.F.B.5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The graph of a function is a line that passes through the coordinates (2, 11) and (8, 14). Write an equation in the form y = mx + b for this function.
y = 0.5x + 10
y = 2x + 7
y = -0.5x + 12
y = x + 9
Tags
CCSS.8.F.B.4
6.
DRAW QUESTION
3 mins • 1 pt
Natasha rides her bicycle to school. She rides slowly uphill for 5 minutes. Then she speeds up and rides at a consistent speed on a flat road for 15 minutes. The last 2 minutes of her ride, Natasha rides back downhill until she arrives at school. Sketch a graph of the behavior of the bike ride over time.
Tags
CCSS.8.F.B.5
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Emma says that Function A and Function B have the same initial value. Is Emma correct? Justify your response.
Yes, both functions have the same initial value.
No, Function A has a different initial value than Function B.
No, Function B has a different initial value than Function A.
No, neither function has an initial value.
Tags
CCSS.8.F.A.2
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