Gaussian Elimination
Quiz
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Medium
+3
Standards-aligned
Chelsea Yavorski
Used 3+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A _____ is a rectangular arrangement of numbers.
Tags
CCSS.HSA.REI.C.8
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A matrix derived from a system of linear equations is the _____ _____ of the system.
Tags
CCSS.HSA.REI.C.8
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
When an element is missing in an equation, what value must go into the matrix for it?
1
-1
0
NA
Tags
CCSS.HSA.REI.C.8
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which row command is an appropriate next step?
7R2 + R3 -> R3
-7R1 + R3 -> R3
7R3 -> R3
-7R2 + R3 -> R3
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is an appropriate first row command to solve this by Gaussian Elimination?
2R2 + R2 -> R2
-2R1 + R2 -> R2
R3 +R2 --> R3
2R1 + R2 --> R2
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the value of y?
3
7
-1
2
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Jessica is simplifying the matrix using Gaussian Elimination. Did she complete the step correctly?
No, she should have changed the 2 to a zero and multiplied -2 by R2 and added R1
No, she wanted to change the 3 to a zero so she should have multiplied R2 and added it to R3
Yes. When you need a zero you multiply by the number's reciprocal.
No. Just punch in the calculator. Who cares about Carl Gauss
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