Question 1

Find the slope and y-intercept, and use them to sketch the graph.
y = -4x + 21

Accepted Answer

The answer of Find the slope and y-intercept, and use...

Question 2

Write a variation model. Use k as the constant of variation. the distance (d)traveled by an object varies directly as the average speed (v)

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The answer of Write a variation model. Use k as...

Question 3

Find the slope and y-intercept of the equation.

Accepted Answer

The answer of Find the slope and y-intercept of the...

Question 4

Does the line pictured below have positive, negative, zero, or undefined slope?

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The answer of Does the line pictured below have positive,...

Question 5

Find the slope and y-intercept, and use them to sketch the graph.

Accepted Answer

The answer of Find the slope and y-intercept, and use...

Question 6

Solve the system using the substitution method.

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The answer of Solve the system using the substitution method....

Question 7

Which is the graph of 5x + 2y = 100?

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The answer of Which is the graph of 5x +...

Question 8

True story from Erin's life: My 4-month old daughter got her shots, and we ended up needing to give her some tylenol for the pain. Infant Tylenol comes in liquid form, and the box indicates that there are 160 mg of
acetaminophen per 5 mL of liquid.
a. Complete the table, and then use it to draw a graph, where x is the amount of infant Tylenol in mL and y is the amount of acetaminophen in mg. 
 b. Is this a direct variation relationship? Why or why not? Be specific.
c. Find the slope of the line you graphed and explain what it means.
d. Write a linear equation that describes the amount of acetaminophen in mg (y)in terms of mL of infant tylenol (x).
e. In spite of the handy SimpleMeasure syringe, the directions don't give a dosage for children
under 2 years old. This is because it depends on weight and they want you to call the doctor so you don't get the math wrong. But I'm a math teacher, so I looked it up. For my daughter's weight at that time, the dosage is 115 mg of acetaminophen. How many mL of infant Tylenol did I need to give her?

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Question 9

Determine if the given point is a solution to the system.

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The answer of Determine if the given point is a...

Question 10

Solve the system using the graphing method.

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The answer of Solve the system using the graphing method....

Question 11

Solve the system by graphing.

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The answer of Solve the system by graphing. ...

Question 12

Graph the line by making a table of ordered pairs and plotting the points.
3x + 2y = -11.

Accepted Answer

The answer of Graph the line by making a table...

Question 13

Find the slope and y-intercept, and use them to sketch the graph.
y = -4x + 21

Accepted Answer

The answer of Find the slope and y-intercept, and use...

Question 14

Find the slope and y-intercept, and use them to sketch the graph.

Accepted Answer

The answer of Find the slope and y-intercept, and use...

Question 15

Of all the topics we have covered in unit 3, what has stood out to you as something most relevant
to your life? Explain why.

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The answer of Of all the topics we have covered...

Question 16

Find the constant of variation,  k .
 a  varies directly as  b  and  a  is 27 when  b  is 36 .

Accepted Answer

A)   
B)   
C)   k=972 
D)

Question 17

Solve the system using the substitution method.

Accepted Answer

The answer of Solve the system using the substitution method....

Question 18

Find the slope of the line connecting the points

Accepted Answer

A)  
 
B)  
 
C)  
 
D)

Question 19

Solve the system by graphing.

Accepted Answer

The answer of Solve the system by graphing. ...

Question 20

Which point is a solution to the system?

Accepted Answer

The answer of Which point is a solution to the...

Exam 3: Thinking Linearly

Find the slope and y-intercept, and use them to sketch the graph. y = -4x + 21

Write a variation model. Use k as the constant of variation. the distance (d)traveled by an object varies directly as the average speed (v)

Find the slope and y-intercept of the equation.

Does the line pictured below have positive, negative, zero, or undefined slope?

Find the slope and y-intercept, and use them to sketch the graph.

Solve the system using the substitution method.

Which is the graph of 5x + 2y = 100?

Determine if the given point is a solution to the system.

Solve the system using the graphing method.

Solve the system by graphing.

Graph the line by making a table of ordered pairs and plotting the points. 3x + 2y = -11.

Find the slope and y-intercept, and use them to sketch the graph. y = -4x + 21

Find the slope and y-intercept, and use them to sketch the graph.

Of all the topics we have covered in unit 3, what has stood out to you as something most relevant to your life? Explain why.

Find the constant of variation, k . a varies directly as b and a is 27 when b is 36 .

Solve the system using the substitution method.

Find the slope of the line connecting the points

Solve the system by graphing.

Which point is a solution to the system?