Homework 4.2 | Mathematics

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Homework 4.2

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9th grade

Mathematics

atkinsonkailee_95503

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Question 1
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300 seconds
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Q.
Solve the system by elimination.
3x + y = 19
2x - y = 6
answer choices
(5, 14)
(4, 5)
(5, 4)
(14, 5)
(5, 14)
alternatives
(4, 5)
(5, 4)
(14, 5)
answer explanation
Tags:
CCSS.Math.Content.HSA-REI.C
CCSS.Math.Content.HSA-REI.C.6
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Question 2
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300 seconds
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Q.
Solve the system by elimination. Hint: What will you use as a multiplier and on which equation?
x + 6y = 17
x - 3y = 8
answer choices
(5, 2)
(11, 1)
(1, 11)
no solution
(5, 2)
alternatives
(11, 1)
(1, 11)
no solution
answer explanation
Tags:
CCSS.Math.Content.HSA-REI.C
CCSS.Math.Content.HSA-REI.C.5
Topics:
Question 3
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900 seconds
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Q.
What would be the first step in finding the solution using elimination?
2x + 2y = -2
3x - 2y = 12
answer choices
you cannot solve this using elimination
cross out the 2x and 3x
Add the like terms. The y terms will zero out.
change to slope intercept form and graph
you cannot solve this using elimination
alternatives
cross out the 2x and 3x
Add the like terms. The y terms will zero out.
change to slope intercept form and graph
answer explanation
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Question 4
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120 seconds
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Q.
Solve the system. You could use elimination OR substitution.
4x + 5y = 5
x = -10y + 3
answer choices
( 1 , 5 )
( 0.2 , 1 )
No Solution
( 1 , 1/5 )
( 1 , 5 )
alternatives
( 0.2 , 1 )
No Solution
( 1 , 1/5 )
answer explanation
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Question 5
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20 seconds
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Q.
What is the variable that willl be "eliminated"?

5x - 4y = 11
5x + 4y = -14
answer choices
x variable
y variables
both variables
x variable
alternatives
y variables
both variables
answer explanation
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Question 6
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60 seconds
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Q.
Which graph represents a system of equations with infinite solutions?
answer choices
None of the above

alternatives

None of the above
answer explanation
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Question 7
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180 seconds
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Q. Write the equation of the line.
answer choices
y=-3x-4
y=-4x-3
y=(-3/4)x-3
y=(-4/3)x-3
y=-3x-4
alternatives
y=-4x-3
y=(-3/4)x-3
y=(-4/3)x-3
answer explanation
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Question 8
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Q. What is Brad's slope in terms of sit-ups?
answer choices
1 sit-up per day
5 sit-ups per day
15 sit-ups per day
15 days per 1 sit-up
1 sit-up per day
alternatives
5 sit-ups per day
15 sit-ups per day
15 days per 1 sit-up
answer explanation
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Question 9
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300 seconds
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Q. What is the y-intercept of the line graphed below?
answer choices
3
4
-3
4/3
3
alternatives
4
-3
4/3
answer explanation
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