If the discriminant of a quadratic equation is 4, which statement describes the roots? a ) there are two complex roots. b ) there are two real roots. c ) there is one real root. d ) there is one complex root.

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.