Chapter 3, Quiz 3 Practice: Sections 3.4 - 3.7, pt. 1!

Section 3.4: Confirm whether or not the ordered triple (2, -1, 4) is a solution for the three-variable system provided:

• No, it is not a solution because it does not work with the first equation.

• No, it is not a solution because it does not work with the second equation.

• No, it is not a solution because ti does not work with the third equation.

• Yes, it is a solution for the system.

Section 3.4: Solve the system of equations provided for the unknown variables using substitution:

• (1.5, -2, 4)

• (1, 2, 4)

• (-1.5, 0, 4)

• (4, -2, 1.75)

Section 3.4: Solve the system of equations provided using elimination:

• (3, 2, 7)

• (8, 1, 3)

• (-3, 2, 5)

• (-3, 8, 7)

Section 3.4: Solve the system of equations provided using elimination. Report answers in the form (a, b, c):

• (5, 10, 16)

• (1, 3, 5)

• (-5, 1, 3)

• (-5, 9, 3)

Section 3.4: Set up a system of three-variables and solve for the unknown quantities!

• Roy = 18 mi, Sally = 36 mi; Jeff = 46 mi

• Roy = 8 mi, Sally = 16 mi, Jeff = 26 mi

• Roy = 7 mi, Sally = 17 mi, Jeff = 24 mi

• Roy = 6 mi, Sally = 27 mi, Jeff = 16 mi

Section 3.5: What are the dimensions of the matrix provided?

• 4 x 2

• 3 x 4

• 4 x 3

• This matrix is dimensionless.

Section 3.5: Perform the matrix operation presented:

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Section 3.5: Perform the matrix operation indicated:

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Section 3.6: Multiply the two 2 x 2 matrices provided:

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• These matrices cannot be multiplied because the dimensions do not match properly.

Section 3.6: Perform the matrix multiplication operation indicated.

• These matrices cannot be multiplied because the dimensions do not properly match.

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