Question
Which matrix represents the system of equations below?
-10x-9y+13z=12
8x-7y-5z=15
5x+4y-6z=-12
a. -10,-9,13
8,-7,-5
5,4,-6
b.-10,-9,13
8,7,5
4,4,-6
c.-10,8,5
-9,-7,4
13,5,-6
d. 10,8,5
9,-7,4
13,5,-6
-10x-9y+13z=12
8x-7y-5z=15
5x+4y-6z=-12
a. -10,-9,13
8,-7,-5
5,4,-6
b.-10,-9,13
8,7,5
4,4,-6
c.-10,8,5
-9,-7,4
13,5,-6
d. 10,8,5
9,-7,4
13,5,-6
Answers
sasha
Ans: a.
the matrix will have the same signs of the coefficients of the equations.
the matrix will have the same signs of the coefficients of the equations.
Reiny
Actually none of them do
the constants were completely ignored in all the choices.
You would want what is called the "augmented" matrix
-10 -9 13 12
8 -7 -5 15
5 4 -6 -12
btw, the elements of a matrix are not separated by commas
the constants were completely ignored in all the choices.
You would want what is called the "augmented" matrix
-10 -9 13 12
8 -7 -5 15
5 4 -6 -12
btw, the elements of a matrix are not separated by commas
Mephiles
8 years later and this question still comes in handy!