Matrices and Row Operations Quiz Active

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Kamal wrote the augmented matrix below to represent a system of equations.

101-1

1 3 -1 -9

3 2 0 -2

Which matrix results from the operation -3R2R2?

1

1-3

0 1 -1

-9 3 27

3

2

TP

-3

-3

3

2

0

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Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

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