Find the center and radius and draw the graph.x2 + y2 - 6x - 8y + 21 = 0
A. 
center (3, -4); radius 2
B. 
center (-3, 4); radius 2
C. 
center (-3, -4); radius 2
D. 
center (3, 4); radius 2
Answer: D
Mathematics
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Match the system of inequalities with one of the graphs.y ? -x2x + y ? -2
A. 
B. 
C. 
D. 
Mathematics
Use the labeled point to write the point-slope form for the line.
A. y - 2 = -4x B. y = -3(x - 2) C. y = -4(x - 2) D. y - 2 = -3x
Mathematics
Solve and graph.x > 4 or x < 4
A. {4}
B. (-?, 4)
C. (-?, 4) ? (4, ?)
D. (4, ?)
Mathematics
Match the inequality with the correct graph or interval notation.x < 3
A. 
B. 
C. 
D. 
Mathematics