Question

The equation of the parabola whose axis is vertical and passes through the points (0,0), (3, 0) and (-1, 4) is

• A. $x^2-3x-y=0$
• B. $x^2+3x+y=0$
  
• C. $x^2-4x-2y=0$
  
• D. $x^2-4x-2y=0$

Answer 1

The correct option is A $x^2-3x-y=0$

Since nothing other than the points are given, we will go for substituting the points in the options.
So we get $x^2-3x-y=0$ as the equation of the parabola