Determine the domain and the range of the given relation.{(6, x), (5, y), (6, z)}
A. domain: {5, 6}; range: {x, y, z}
B. domain: {x, y, z}; range: {6, 5, -6}
C. domain: {6, 5, -6}; range: {x, y, z}
D. domain: {x, y, z}; range: {5, 6}
Answer: A
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Find an equation of the tangent line at the indicated point on the graph of the function.y = f(x) = 2
- x + 9, (x, y) = (4, 9)
A. y = - 
x + 11
B. y = - 
x + 9
C. y = 9
D. y = 
x - 11
Find the y-intercepts for the parabola whose equation is given. If the y-intercepts are irrational, round your answers to the nearest tenth.y = x2 + 4x
A. y-intercept (0, 0) B. No y-intercept C. y-intercept (0, 4) D. y-intercepts (0, 0) and (-4, 0)
Solve the problem.During a drought, the water level in a river dropped 3 inches each day for 4 straight days. What was the change in the water level of the river during this period?
A. -12 in. B. 12 in. C. -7 in. D. 7 in.
Evaluate the double integral.
A. 
(e2 - e)2
B. 
(e - 1)2
C. 
(e2 - e)2
D. 
(e - 1)2