Precalculus Algebra Practice Test Questions and Answers

Precalculus Algebra Practice Test Questions and Answers True or Flase: Rational number and irrational number are in the set of real numbers. - Answer-True In the complex number 5+2i, the number 5 is called the __________ part, the number 2 is called the __________ part and the number i is called the _________. - Answer-real, imaginary, imaginary unit True or False: The conjugate of 2+5i is -2-5i. - Answer-False True or False: All real numbers are complex numbers. - Answer-True True or False: If 2-3i is a solution of a quadratic equation with real the real coefficients, then -2+3i is also a solution. - Answer-False Which operation involving complex numbers requires the use of a conjugate to be carried out? - Answer-Division Powers of i repeat every ________ power. - Answer-Fourth The graph of a quadratic equation is called a(n) _________. - Answer-Parabola The vertical line passing through the vertex of a parabola is called the ____________ - Answer-Axis of Symmetry True or False: The x-intercepts of a function y=f(x) are the real solutions of the equation f(x)=0. - Answer-True The graph of every polynomial function is both ________ and __________. - Answer-Smooth, continuous If r is a real zero of even multiplicity of a function f, then the graph of f __________ the x-axis at r. - Answer-Touches