Find the coordinates of the points of intersection of the graphs with coordinate axes:
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When the squared terms are of different signs, the equation generally describes a hyperbola. This one has its vertices at x=±30, so the parameters of interest are
domain: (-∞, -30] ∪ [30, ∞)
range: (-∞, ∞)
domain: (-∞, -30] ∪ [30, ∞)
range: (-∞, ∞)