2.
the slope of the tangent to a curve at any point (x, y) on the curve is negative 1 times x divided by y . find the equation of the curve if the point (2, -2) is on the curve. (5 points)
x + y = 0
x2 - y2 = -2
x2 + y2 = 16
x2 + y2 = 8