please help me on my quiz anyone !!!!!!!!!!!!!!!!!!!!!!!?

[BghoiuhGbhljk]

Question 1 (Multiple Choice Worth 4 points)

[6.02] Carlos solved the system of equations below. What mistake did he make in his work?

2x + y = 5
x - 2y = 10

y = 5 - 2x
x - 2(5 - 2x) = 10
x + 10 + 4x = 10
5x + 10 = 10
5x = 0
x = 0

2(0) + y = 5
y = 5

He should have substituted 5 + 2x

He did not distribute correctly

He combined like terms incorrectly, it should have been 4x instead of 5x

He made no mistake



--------------------------------------------------------------------------------



Question 2 (Multiple Choice Worth 5 points)

[6.01] Select the system of equations that corresponds to the given graph.



4x + y = 6
6x + 3y = 6


-3x + y = 2
4x + 2y = 4


2x + y = 4
6x + 3y = 12


4x + 2y = 6
6x + 3y = 12




--------------------------------------------------------------------------------



Question 3 (Multiple Choice Worth 4 points)

[6.03] The three Math Idol judges have been eliminating contestants all day! The number of one-step equations and two-step equations who have been eliminated today is equal to 610! If four times the number of one-step equations minus twice the number of two-step equations is equal to 340, how many one-step equations auditioned today?

260

340

350

670



--------------------------------------------------------------------------------



Question 4 (Multiple Choice Worth 3 points)

[6.02] For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?

2x + y = 9
-x - y = -8

-8 + y

-8 - y

8 + y

8 - y



--------------------------------------------------------------------------------



Question 5 (Multiple Choice Worth 4 points)

[6.02] and [6.03] What is the value of the x variable in the solution to the following system of equations?

4x + 8y = 8
x + 2y = 2

0

2

There is no x value as there is no solution to this system

x can be any value as there are infinitely many solutions to this system



--------------------------------------------------------------------------------



Question 6 (Multiple Choice Worth 4 points)

[6.03] What is the value of the x variable in the solution to the following system of equations?

2x - 3y = 3
5x - 4y = 4

-1

0

x can be any number as there are infinitely many solutions to this system

There is no x value as there is no solution to this system



--------------------------------------------------------------------------------



Question 7 (Multiple Choice Worth 4 points)

[6.01] Systems of equations with different slopes and different y-intercepts have more than one solution.

Always

Sometimes

Never



--------------------------------------------------------------------------------



Question 8 (Multiple Choice Worth 4 points)

[6.01] Systems of equations with the same slopes have infinitely many solutions.

Always

Sometimes

Never



--------------------------------------------------------------------------------



Question 9 (Multiple Choice Worth 4 points)

[6.03] If you wanted to eliminate the y variable in the following system, what could be your first step?

x - y = 6
4x - 3y = 12

Add the two equations together

Multiply the first equation by -4

Multiply the first equation by 3

Multiply the first equation by -3



--------------------------------------------------------------------------------



Question 10 (Multiple Choice Worth 4 points)

[6.02] Use a system of equations to solve the following problem: Charles High School has a total of 94 boys and girls who play sports. If the number of boys is 22 more than twice the number of girls, how many boys play sports at this high school?

70

48

24

80



--------------------------------------------------------------------------------


Question 11 (Essay Worth 10 points)

[6.02] and [6.03] Part 1: Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose that method.
Part 2: Solve the following system of equations and show all of your work.

5x + 3y = 8
y = -2x + 1

 

[Unregistered]

Hey you need to really do your own work it's not working like this trust me it take longer to do this just study the work or call your teacher anyways this is your mom I'm taking you back to public school -mom