QUIZ
Homework 4.2
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9 questions
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• Question 1
300 seconds
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Q.

Solve the system by elimination.

3x + y = 19

2x - y = 6

(5, 14)

(4, 5)

(5, 4)

(14, 5)

• Question 2
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

(5, 2)

(11, 1)

(1, 11)

no solution

• Question 3
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

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

• Question 4
120 seconds
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Q.

Solve the system. You could use elimination OR substitution.

4x + 5y = 5

x = -10y + 3

( 1 , 5 )

( 0.2 , 1 )

No Solution

( 1 , 1/5 )

• Question 5
20 seconds
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Q.

What is the variable that willl be "eliminated"?

5x - 4y = 11

5x + 4y = -14

x variable

y variables

both variables

• Question 6
60 seconds
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Q.

Which graph represents a system of equations with infinite solutions?

None of the above

• Question 7
180 seconds
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Q. Write the equation of the line.
y=-3x-4
y=-4x-3
y=(-3/4)x-3
y=(-4/3)x-3
• Question 8
120 seconds
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Q. What is Brad's slope in terms of sit-ups?
1 sit-up per day
5 sit-ups per day
15 sit-ups per day
15 days per 1 sit-up
• Question 9
300 seconds
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Q. What is the y-intercept of the line graphed below?