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LC 6A Review

Authored by Adele Peterman

Mathematics

9th Grade

CCSS covered

Used 6+ times

LC 6A Review
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16 questions

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1.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

What does a "solution to a system of equations" mean?

It's the point where both equations equal zero

It's the point where graphs of both equations cross the y-axis

It's the point that is true for both equations at the same time

It's the point where graphs of both equations cross the x-axis

Tags

CCSS.8.EE.C.8B

2.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Is (1,3) a solution to this system? (Hint: test the x and y values in both equations to see if they work.)


y = 2x + 1

y = 4x - 1

Yes

No

3.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

The solution is:

(4, 3)
(3, 4)
(-4, 3)
No solution

Tags

CCSS.8.EE.C.8B

4.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

When one equation graphs to be the same as the second equation...

you will have no solution.

you will have one solution.

you will have infinite solutions.

you will graph a giraffe.

Tags

CCSS.8.EE.C.8A

5.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

If a system of equations has no solution, what does the graph look like? 

intersecting lines
parallel lines
skew lines
intersecting lines

Tags

CCSS.8.EE.C.8A

6.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

Which system of equations does the graph represent?

y = -x + 2

y = x + 4

y = x + 2

y = -x + 4

y = x - 2

y = x - 4

y = -x - 2

y = -x - 4

Tags

CCSS.8.EE.C.8B

7.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Which answer has a correct first step for solving this system without graphing:

3x + 3y = 3

y = 3x + 5

The variable is already isolated, so we've already solved the system.

The variable is already isolated for y, so we substitute it in the first equation and solve for x

3x + 3(3x + 5) = 3

Free sha vaca doo

The variable is already isolated for y, so we substitute it in the second equation and solve for x

y = 3(3x + 3y) = 3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

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