Use the graph to determine the domain and range of the function. 
A. domain: all real numbers
range: all real numbers
B. domain: {x|x ? -2, x ? 2}
range: {y|y ? 0 or y > 1}
C. domain: {x|x ? -2, x ? 2}
range: {y|y ? 0 or y ? 1}
D. domain: {x|x ? 0 or x > 1}
range: {y|y ? -2, y ? 2}
Answer: B
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Provide an appropriate response.Find the coordinates of all points (x, y) on the graph of the equation x2 + y2 = 2x + 2y where the tangent is horizontal.
A. (1, 1 + 
), (1, 1 - 
)
B. (1, 1), (1, -1)
C. (2, 2 + 
), (2, 2 - 
)
D. (2, 0), (2, 2)
Find the distance d(A, B) between the points A and B.A = (4, 2); B = (1, 6)
A. 10 B. 25 C. 5 D. 6
Rewrite the expression with a positive rational exponent. Simplify, if possible.121/9 ? 128/9
A. 121/9
B. 
C. 12
D. 128/81
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.x - y + z = -3x + y + z = 5x + y - z = -1
A. (3, -2, 4) B. (-2, 3, 4) C. (-2, 4, 3) D. No solution