Answer to Question #56376 in Algebra for Butch DeLoria

Question

9: If you were to solve the following system of equations by using a matrix, which of the following would be your coefficient matrix?
5x – y = 18
3x + 8y =15

A: [5 18]
[3 15]

B: [5 -1 18]
[3 8 15]

C: [5 -1]
[3 8]

D: [5 3]
[-1 8]

10: It is possible for a system of linear equations to have an infinite number of solutions
A: True
B: False

11: Let y = 3t + 6 be a linear function representing the distance from home for an ant t minutes after starting out from a location near its home. What does the number 3 represent in this function.?

A: The ant is 3 feet from its home after t minutes.
B: The ant started out 3 feet from its home.
C: The ant is crawling at 3 feet per minute.
D: The ant is moving 3 feet every 6 minutes.