Determine if the matrix is in row-echelon form.
A. No
B. Yes
Answer: A
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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.x - z = 2y + z = 2x + z = 4
A. x = 3, y = 1, z = 1 B. x = 6, y = 2, z = 2 C. x = 1, y = 3, z = - 1 D. x = 2, y = 2, z = 0
Determine whether the equation defines y as a function of x. y = x2
A. function B. not a function
Solve the problem.A rectangular plot of land needs to be fenced in. It has an area of 11,200 square feet. One side measures 70 feet . Find the length of the other side and find the total amount of fencing needed.
A. 460 ft; 1120 ft B. 160 ft; 230 ft C. 160 ft; 460 ft D. 230 ft; 460 ft
Describe the transformations that produce the graph of g from the graph of f.
; g(x) = -4x3 + 3
A. Stretch vertically by a factor of 3. Reflect it across the x-axis. Shift it 4 units upward. B. Stretch vertically by a factor of 4. Reflect it across the x-axis. Shift it 3 units downward. C. Stretch vertically by a factor of 4. Reflect it across the x-axis. Shift it 3 units upward. D. Stretch vertically by a factor of 4. Reflect it across the y-axis. Shift it 3 units upward.