College Algebra and Trigonometry (3rd Edition)
3rd Edition
ISBN: 9780321867513
Author: J. S. Ratti, Marcus S. McWaters
Publisher: PEARSON
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Textbook Question
Chapter 9.4, Problem 5E
True or False. A 2 by 2 determinant is always positive.
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Students have asked these similar questions
1
3 -4
In the following matrix
perform the operation 2R1 + R2 → R2.
-2 -1
6
After you have completed this, what numeric value is in the a22 position?
5
-2
0
1
6 12
Let A
=
6
7
-1
and B =
1/2 3 -14
-2 0
4
4
4
0
Compute -3A+2B and call the resulting matrix R.
If rij represent the individual entries in the matrix R, what numeric value is in 131?
Input your answer as a numeric value only.
1
-2
4
10
My goal is to put the matrix
5
-1
1
0 into row echelon form using Gaussian elimination.
3
-2
6
9
My next step is to manipulate this matrix using elementary row operations to get a 0 in the a21 position.
Which of the following operations would be the appropriate elementary row operation to use to get a 0 in
the a21 position?
O (1/5)*R2 --> R2
○ 2R1 + R2 --> R2
○ 5R1+ R2 --> R2
O-5R1 + R2 --> R2
Chapter 9 Solutions
College Algebra and Trigonometry (3rd Edition)
Ch. 9.1 - A matrix is any rectangular array of...Ch. 9.1 - Prob. 2ECh. 9.1 - Prob. 3ECh. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Prob. 6ECh. 9.1 - Prob. 7ECh. 9.1 - Prob. 8ECh. 9.1 - In Exercises 9-14, determine the order of each...Ch. 9.1 - In Exercises 9-14, determine the order of each...
Ch. 9.1 - Prob. 11ECh. 9.1 - Prob. 12ECh. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Prob. 15ECh. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - In Exercises 19-24, write the augmented matrix for...Ch. 9.1 - Prob. 20ECh. 9.1 - Prob. 21ECh. 9.1 - Prob. 22ECh. 9.1 - Prob. 23ECh. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - Prob. 26ECh. 9.1 - Prob. 27ECh. 9.1 - Prob. 28ECh. 9.1 - Prob. 29ECh. 9.1 - Prob. 30ECh. 9.1 - Prob. 31ECh. 9.1 - Prob. 32ECh. 9.1 - Prob. 33ECh. 9.1 - Prob. 34ECh. 9.1 - Prob. 35ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Prob. 39ECh. 9.1 - Prob. 40ECh. 9.1 - Prob. 41ECh. 9.1 - Prob. 42ECh. 9.1 - Prob. 43ECh. 9.1 - Prob. 44ECh. 9.1 - Prob. 45ECh. 9.1 - Prob. 46ECh. 9.1 - Prob. 47ECh. 9.1 - Prob. 48ECh. 9.1 - Prob. 49ECh. 9.1 - Prob. 50ECh. 9.1 - Prob. 51ECh. 9.1 - Prob. 52ECh. 9.1 - Prob. 53ECh. 9.1 - Prob. 54ECh. 9.1 - Prob. 55ECh. 9.1 - Prob. 56ECh. 9.1 - Prob. 57ECh. 9.1 - Prob. 58ECh. 9.1 - Prob. 59ECh. 9.1 - Prob. 60ECh. 9.1 - Prob. 61ECh. 9.1 - Prob. 62ECh. 9.1 - Prob. 63ECh. 9.1 - Prob. 64ECh. 9.1 - Prob. 65ECh. 9.1 - Prob. 66ECh. 9.1 - Prob. 67ECh. 9.1 - Prob. 68ECh. 9.1 - Prob. 69ECh. 9.1 - Prob. 70ECh. 9.1 - Prob. 71ECh. 9.1 - In Exercises 69-74, solve each system of equations...Ch. 9.1 - Prob. 73ECh. 9.1 - Prob. 74ECh. 9.1 - Prob. 75ECh. 9.1 - Prob. 76ECh. 9.1 - Prob. 77ECh. 9.1 - In Exercises 77 and 78, determine whether the...Ch. 9.1 - Prob. 79ECh. 9.1 - Prob. 80ECh. 9.1 - Prob. 81ECh. 9.1 - Prob. 82ECh. 9.1 - Heat transfer. In a study of heat transfer in a...Ch. 9.1 - Prob. 84ECh. 9.1 - Prob. 85ECh. 9.1 - Traffic flow. Repeat Exercise 85 for the following...Ch. 9.1 - Prob. 87ECh. 9.1 - Prob. 88ECh. 9.1 - Prob. 89ECh. 9.1 - Prob. 90ECh. 9.1 - Prob. 91ECh. 9.1 - Prob. 92ECh. 9.1 - Prob. 93ECh. 9.1 - Prob. 94ECh. 9.1 - Prob. 95ECh. 9.1 - Prob. 96ECh. 9.1 - Prob. 97ECh. 9.1 - Prob. 98ECh. 9.1 - Prob. 99ECh. 9.1 - Prob. 100ECh. 9.1 - Prob. 101ECh. 9.1 - Prob. 102ECh. 9.1 - Prob. 103ECh. 9.1 - Prob. 104ECh. 9.1 - Prob. 105ECh. 9.1 - Prob. 106ECh. 9.1 - Prob. 107ECh. 9.1 - Prob. 108ECh. 9.1 - Prob. 109ECh. 9.1 - Prob. 110ECh. 9.1 - Prob. 111ECh. 9.1 - Prob. 112ECh. 9.1 - Prob. 113ECh. 9.1 - Prob. 114ECh. 9.2 - Two mn matrices A=aij and B=bij are equal if...Ch. 9.2 - Prob. 2ECh. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Prob. 6ECh. 9.2 - Prob. 7ECh. 9.2 - Prob. 8ECh. 9.2 - In Exerciser 9-16, find the values of all...Ch. 9.2 - In Exerciser 9-16, find the values of all...Ch. 9.2 - Prob. 11ECh. 9.2 - Prob. 12ECh. 9.2 - In Exerciser 9-16, find the values of all...Ch. 9.2 - Prob. 14ECh. 9.2 - In exercise 17-24, find each of the following if...Ch. 9.2 - Prob. 16ECh. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Prob. 21ECh. 9.2 - Prob. 22ECh. 9.2 - In Exercise 25-32, solve each matrix equation for...Ch. 9.2 - In Exercise 25-32, solve each matrix equation for...Ch. 9.2 - In Exercise 25-32, solve each matrix equation for...Ch. 9.2 - In Exercise 25-32, solve each matrix equation for...Ch. 9.2 - In Exercise 25-32, solve each matrix equation for...Ch. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - In Exercise 25-32, solve each matrix equation for...Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - In Exercise 33-42, find each product if possible....Ch. 9.2 - Prob. 41ECh. 9.2 - Prob. 42ECh. 9.2 - Prob. 43ECh. 9.2 - Prob. 44ECh. 9.2 - Prob. 45ECh. 9.2 - Prob. 46ECh. 9.2 - Prob. 47ECh. 9.2 - 50 Cost matrix. Repeat Exercise 49 if the order...Ch. 9.2 - Prob. 49ECh. 9.2 - Prob. 50ECh. 9.2 - Prob. 51ECh. 9.2 - Prob. 52ECh. 9.2 - Prob. 53ECh. 9.2 - Prob. 54ECh. 9.2 - Prob. 55ECh. 9.2 - Prob. 56ECh. 9.2 - Prob. 57ECh. 9.2 - Let A=235145134 and B=135135135 Verify that AB =...Ch. 9.2 - Select appropriate 2 ( 2 matrices A and B to show...Ch. 9.2 - Prob. 60ECh. 9.2 - Prob. 61ECh. 9.2 - Prob. 62ECh. 9.2 - Prob. 63ECh. 9.2 - Prob. 64ECh. 9.2 - Find x and y if 4213102121234211=xyCh. 9.2 - Prob. 66ECh. 9.2 - Prob. 67ECh. 9.2 - Prob. 68ECh. 9.2 - Prob. 69ECh. 9.2 - Prob. 70ECh. 9.2 - Prob. 71ECh. 9.2 - Prob. 72ECh. 9.2 - Prob. 73ECh. 9.2 - Prob. 74ECh. 9.2 - Prob. 75ECh. 9.2 - Prob. 76ECh. 9.2 - Prob. 77ECh. 9.2 - Prob. 78ECh. 9.2 - Prob. 79ECh. 9.2 - Prob. 80ECh. 9.2 - Prob. 81ECh. 9.2 - Prob. 82ECh. 9.2 - Prob. 83ECh. 9.2 - Prob. 84ECh. 9.2 - Prob. 85ECh. 9.2 - Prob. 86ECh. 9.2 - Prob. 87ECh. 9.2 - In exercise 95-98, solve each system....Ch. 9.3 - For n × n matrices A and B, if AB = I = BA, then B...Ch. 9.3 - Prob. 2ECh. 9.3 - To find the inverse of an invertible matrix A, we...Ch. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Prob. 6ECh. 9.3 - In Exercises 9-18, determine whether B is the...Ch. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Prob. 13ECh. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Prob. 16ECh. 9.3 - Prob. 17ECh. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Prob. 20ECh. 9.3 - Prob. 21ECh. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - Prob. 24ECh. 9.3 - Prob. 25ECh. 9.3 - Prob. 26ECh. 9.3 - Prob. 27ECh. 9.3 - Prob. 28ECh. 9.3 - Prob. 29ECh. 9.3 - Prob. 30ECh. 9.3 - Prob. 31ECh. 9.3 - Prob. 32ECh. 9.3 - Prob. 33ECh. 9.3 - Prob. 34ECh. 9.3 - Prob. 35ECh. 9.3 - Prob. 36ECh. 9.3 - Prob. 37ECh. 9.3 - Prob. 38ECh. 9.3 - In Exercises 39—42, write each matrix equation as...Ch. 9.3 - Prob. 40ECh. 9.3 - Prob. 41ECh. 9.3 - Prob. 42ECh. 9.3 - Prob. 43ECh. 9.3 - Prob. 44ECh. 9.3 - a. Find the inverse of the matrix A=111123149 . b....Ch. 9.3 - Prob. 46ECh. 9.3 - Prob. 47ECh. 9.3 - Prob. 48ECh. 9.3 - Prob. 49ECh. 9.3 - Prob. 50ECh. 9.3 - Prob. 51ECh. 9.3 - Prob. 52ECh. 9.3 - Prob. 53ECh. 9.3 - Prob. 54ECh. 9.3 - Prob. 55ECh. 9.3 - Prob. 56ECh. 9.3 - Prob. 57ECh. 9.3 - Prob. 58ECh. 9.3 - Prob. 59ECh. 9.3 - Prob. 60ECh. 9.3 - Prob. 61ECh. 9.3 - Prob. 62ECh. 9.3 - Prob. 63ECh. 9.3 - Prob. 64ECh. 9.3 - Prob. 65ECh. 9.3 - Prob. 66ECh. 9.3 - Prob. 67ECh. 9.3 - Prob. 68ECh. 9.3 - Prob. 69ECh. 9.3 - Prob. 70ECh. 9.3 - Prob. 71ECh. 9.3 - Prob. 72ECh. 9.3 - Prob. 73ECh. 9.3 - Prob. 74ECh. 9.3 - Prob. 75ECh. 9.3 - Prob. 76ECh. 9.3 - Prob. 77ECh. 9.3 - Prob. 78ECh. 9.3 - Prob. 79ECh. 9.3 - Prob. 80ECh. 9.3 - Prob. 81ECh. 9.3 - Prob. 82ECh. 9.3 - Prob. 83ECh. 9.3 - Prob. 84ECh. 9.3 - Prob. 85ECh. 9.3 - Prob. 86ECh. 9.3 - Prob. 87ECh. 9.3 - Prob. 88ECh. 9.3 - Prob. 89ECh. 9.3 - Prob. 90ECh. 9.3 - Prob. 91ECh. 9.3 - Prob. 92ECh. 9.3 - Prob. 93ECh. 9.3 - Prob. 94ECh. 9.3 - Prob. 95ECh. 9.4 - The determinant of abcd is______________.Ch. 9.4 - The minor of an element is the determinant you get...Ch. 9.4 - To expand an n × n determinant, you multiply each...Ch. 9.4 - A system of n linear equations in n variables has...Ch. 9.4 - True or False. A 2 by 2 determinant is always...Ch. 9.4 - Prob. 6ECh. 9.4 - In Exercises 9—18, evaluate each determinant. 9. 2...Ch. 9.4 - Prob. 8ECh. 9.4 - Prob. 9ECh. 9.4 - In Exercises 9—18, evaluate each determinant. 9. 2...Ch. 9.4 - Prob. 11ECh. 9.4 - Prob. 12ECh. 9.4 - Prob. 13ECh. 9.4 - Prob. 14ECh. 9.4 - In Exercises 9—18, evaluate each determinant. 9. 2...Ch. 9.4 - Prob. 16ECh. 9.4 - For Exercises 19—22, consider the matrix...Ch. 9.4 - For Exercises 19—22, consider the matrix...Ch. 9.4 - Prob. 19ECh. 9.4 - Prob. 20ECh. 9.4 - Prob. 21ECh. 9.4 - Prob. 22ECh. 9.4 - Prob. 23ECh. 9.4 - Prob. 24ECh. 9.4 - Prob. 25ECh. 9.4 - Prob. 26ECh. 9.4 - Prob. 27ECh. 9.4 - Prob. 28ECh. 9.4 - In Exercises 23—38, evaluate each determinant. 23....Ch. 9.4 - Prob. 30ECh. 9.4 - Prob. 31ECh. 9.4 - Prob. 32ECh. 9.4 - Prob. 33ECh. 9.4 - Prob. 34ECh. 9.4 - Prob. 35ECh. 9.4 - In Exercises 23—38, evaluate each determinant. 23....Ch. 9.4 - Prob. 37ECh. 9.4 - Prob. 38ECh. 9.4 - Prob. 39ECh. 9.4 - Prob. 40ECh. 9.4 - Prob. 41ECh. 9.4 - In Exercises 39—48, use Cramer's Rule (if...Ch. 9.4 - Prob. 43ECh. 9.4 - In Exercises 39—48, use Cramer's Rule (if...Ch. 9.4 - Prob. 45ECh. 9.4 - Prob. 46ECh. 9.4 - Prob. 47ECh. 9.4 - Prob. 48ECh. 9.4 - Prob. 49ECh. 9.4 - Prob. 50ECh. 9.4 - Prob. 51ECh. 9.4 - Prob. 52ECh. 9.4 - Prob. 53ECh. 9.4 - Prob. 54ECh. 9.4 - Prob. 55ECh. 9.4 - Prob. 56ECh. 9.4 - Prob. 57ECh. 9.4 - Prob. 58ECh. 9.4 - Prob. 59ECh. 9.4 - Prob. 60ECh. 9.4 - Prob. 61ECh. 9.4 - Prob. 62ECh. 9.4 - Prob. 63ECh. 9.4 - Prob. 64ECh. 9.4 - Prob. 65ECh. 9.4 - Prob. 66ECh. 9.4 - Prob. 67ECh. 9.4 - Prob. 68ECh. 9.4 - Prob. 69ECh. 9.4 - Prob. 70ECh. 9.4 - Prob. 71ECh. 9.4 - Prob. 72ECh. 9.4 - Prob. 73ECh. 9.4 - Prob. 74ECh. 9.4 - Prob. 75ECh. 9.4 - Prob. 76ECh. 9.4 - Prob. 77ECh. 9.4 - Prob. 78ECh. 9.4 - Prob. 79ECh. 9.4 - Prob. 80ECh. 9.4 - Prob. 81ECh. 9.4 - Prob. 82ECh. 9.4 - Prob. 83ECh. 9.4 - Prob. 84ECh. 9.4 - Prob. 85ECh. 9.4 - Prob. 86ECh. 9.4 - Prob. 87ECh. 9.4 - Prob. 88ECh. 9.4 - Prob. 89ECh. 9.4 - Prob. 90ECh. 9.4 - Prob. 91ECh. 9.4 - Prob. 92ECh. 9.4 - Prob. 93ECh. 9.4 - Find the values of a and b for which the system of...Ch. 9.4 - Prob. 95ECh. 9.4 - Prob. 96ECh. 9.4 - Prob. 97ECh. 9.4 - Prob. 98ECh. 9.4 - Prob. 99ECh. 9.4 - Prob. 100ECh. 9.4 - Prob. 101ECh. 9.4 - Prob. 102ECh. 9.4 - Prob. 103ECh. 9.4 - Prob. 104ECh. 9 - Prob. 1RECh. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - In Exercises 7 and 8, write the augmented matrix...Ch. 9 - In Exercises 7 and 8, write the augmented matrix...Ch. 9 - Prob. 9RECh. 9 - In Exercise 9 and 10 each matrix to row-echelon...Ch. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Prob. 13RECh. 9 - In Exercise 13-16, solve each system of equation...Ch. 9 - Prob. 15RECh. 9 - Prob. 16RECh. 9 - Prob. 17RECh. 9 - Prob. 18RECh. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Prob. 21RECh. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - Prob. 24RECh. 9 - Prob. 25RECh. 9 - Prob. 26RECh. 9 - Prob. 27RECh. 9 - Prob. 28RECh. 9 - Prob. 29RECh. 9 - Prob. 30RECh. 9 - Prob. 31RECh. 9 - Prob. 32RECh. 9 - Prob. 33RECh. 9 - Prob. 34RECh. 9 - Prob. 35RECh. 9 - Prob. 36RECh. 9 - Prob. 37RECh. 9 - Prob. 38RECh. 9 - Prob. 39RECh. 9 - Prob. 40RECh. 9 - Prob. 41RECh. 9 - Prob. 42RECh. 9 - Prob. 43RECh. 9 - Prob. 44RECh. 9 - Prob. 45RECh. 9 - Prob. 46RECh. 9 - Prob. 47RECh. 9 - Prob. 48RECh. 9 - Prob. 49RECh. 9 - Prob. 50RECh. 9 - Prob. 51RECh. 9 - Prob. 52RECh. 9 - Prob. 53RECh. 9 - Prob. 54RECh. 9 - Prob. 55RECh. 9 - Prob. 56RECh. 9 - Prob. 57RECh. 9 - Prob. 58RECh. 9 - Prob. 59RECh. 9 - Prob. 60RECh. 9 - Prob. 61RECh. 9 - Prob. 62RECh. 9 - Prob. 63RECh. 9 - Prob. 64RECh. 9 - Prob. 65RECh. 9 - Prob. 66RECh. 9 - Prob. 67RECh. 9 - Prob. 68RECh. 9 - Prob. 69RECh. 9 - Prob. 70RECh. 9 - Prob. 71RECh. 9 - Prob. 72RECh. 9 - Prob. 73RECh. 9 - Prob. 74RECh. 9 - Prob. 75RECh. 9 - Prob. 76RECh. 9 - Prob. 1PTACh. 9 - Prob. 2PTACh. 9 - Prob. 3PTACh. 9 - Prob. 4PTACh. 9 - Prob. 5PTACh. 9 - Prob. 6PTACh. 9 - Prob. 7PTACh. 9 - Prob. 8PTACh. 9 - Prob. 9PTACh. 9 - Prob. 10PTACh. 9 - Prob. 11PTACh. 9 - Prob. 12PTACh. 9 - Prob. 13PTACh. 9 - Prob. 14PTACh. 9 - Prob. 15PTACh. 9 - Prob. 16PTACh. 9 - Prob. 17PTACh. 9 - Prob. 18PTACh. 9 - Prob. 19PTACh. 9 - Prob. 20PTACh. 9 - Prob. 1PTBCh. 9 - Prob. 2PTBCh. 9 - Prob. 3PTBCh. 9 - Prob. 4PTBCh. 9 - Prob. 5PTBCh. 9 - Prob. 6PTBCh. 9 - Prob. 7PTBCh. 9 - Prob. 8PTBCh. 9 - Prob. 9PTBCh. 9 - Prob. 10PTBCh. 9 - Prob. 11PTBCh. 9 - Prob. 12PTBCh. 9 - Prob. 13PTBCh. 9 - Prob. 14PTBCh. 9 - Prob. 15PTBCh. 9 - Prob. 16PTBCh. 9 - Prob. 17PTBCh. 9 - Prob. 18PTBCh. 9 - Prob. 19PTBCh. 9 - Prob. 20PTBCh. 9 - Prob. 1CRECh. 9 - Prob. 2CRECh. 9 - Prob. 3CRECh. 9 - Prob. 4CRECh. 9 - Prob. 5CRECh. 9 - Prob. 6CRECh. 9 - Prob. 7CRECh. 9 - Prob. 8CRECh. 9 - Prob. 9CRECh. 9 - Prob. 10CRECh. 9 - Prob. 11CRECh. 9 - Prob. 12CRECh. 9 - Prob. 13CRECh. 9 - Prob. 14CRECh. 9 - Prob. 15CRECh. 9 - Prob. 16CRECh. 9 - Prob. 17CRECh. 9 - Prob. 18CRECh. 9 - Prob. 19CRECh. 9 - Prob. 20CRE
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- The 2x2 linear system of equations -2x+4y = 8 and 4x-3y = 9 was put into the following -2 4 8 augmented matrix: 4 -3 9 This augmented matrix is then converted to row echelon form. Which of the following matrices is the appropriate row echelon form for the given augmented matrix? 0 Option 1: 1 11 -2 Option 2: 4 -3 9 Option 3: 10 ܂ -2 -4 5 25 1 -2 -4 Option 4: 0 1 5 1 -2 Option 5: 0 0 20 -4 5 ○ Option 1 is the appropriate row echelon form. ○ Option 2 is the appropriate row echelon form. ○ Option 3 is the appropriate row echelon form. ○ Option 4 is the appropriate row echelon form. ○ Option 5 is the appropriate row echelon form.arrow_forwardLet matrix A have order (dimension) 2x4 and let matrix B have order (dimension) 4x4. What results when you compute A+B? The resulting matrix will have dimensions of 2x4. ○ The resulting matrix will be a single number (scalar). The resulting matrix will have dimensions of 4x4. A+B is undefined since matrix A and B do not have the same dimensions.arrow_forwardIf -1 "[a446]-[254] 4b = -1 , find the values of a and b. ○ There is no solution for a and b. ○ There are infinite solutions for a and b. O a=3, b=3 O a=1, b=2 O a=2, b=1 O a=2, b=2arrow_forward
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