Question

Graph of the quadratic equation ax² + bx + c = 0 , with a > 0 , D < 0 is

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

In the equation ax² + bx + c = 0, a is the coefficient of x². D is the disriminant b² – 4 ac. Value of the coefficient of x² decides whether the graph opens upwards or downwards. Positive 'a' implies upward opening parabola. Value of the discriminant decides the no. of roots of the quadratic equation. Negative 'D' implies no real roots, i.e. the curve doesn't intersect the x-axis.