14. The correct answer is (E). Make a sketch of the graphs of the two equations.
The graph of x
2 + y
2 = 7 is a circle with center at (0, 0) and
radius = .
The graph of x
2 – y
2 = 1 is a hyperbola with intercepts at
(1, 0) and (– 1, 0). Thus there are 4 points of intersection.
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