Respuesta :

elaineandrei93
  1. This is in factored form. You can immediately see that the roots of the quadratic (the values of x for which y=0) are 4 and -2.
  2. This is in standard form. You can see that the y-intercept (the value of y when x=0) is -8.
  3. This is in vertex form. This tells you that the vertex of the quadratic is (1,-9).