Use the substitution-of-variable technique to solve the system analytically.
+ 
= - 
- 
= - 
A. {(-5, -1)}
B. {(5, 1)}
C. {(-1, -5)}
D. {(9, 8)}
Answer: A
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Find an equation of an ellipse satisfying the given conditions.Foci: (0,-3) and (0, 3) ; length of major axis: 10
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Solve the equation.72x-2 - x-1 - 1 = 0
A. 
, - 
B. 9, -8
C. - 
, 
D. -9, 8
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 0), (0, 9), (9, 0) symmetry: origin B. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 9), (9, 0) symmetry: x-axis, y-axis C. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 9), (9, 0) symmetry: x-axis, y-axis, origin D. not a function
Solve by using the square root property.(x - 3)2 = 49
A. {52} B. {10, -4} C. {7, -7} D. {-4, -10}