
See also Quadratic equations; Systems of equations wjich value, 28—32, 39, 49, circles, complex solutions, cube root, ellipses, — equivalent exponential,exponential, solving, with logarithms, writing equivalent, forms, 75—80 graphing, hyperbolas, — imaginary solutions, irrational roots, linear, 63—67, 75—80, 86,, logarithmic,, R92 Index Equivalent expressions, Error, measurement,sampling, —, Error Analysis. Z zeros The x-intercepts of the graph of a quadratic equation; the points for which f x 0. Each one is also marked with its degree of difficulty, from one to three. The probability is far greater that guessing will result in a low grade than in a high grade. The graph is bell-shaped with a horizontal asymptote at f x 0. Jeff; when Dustin