Question

11. The adjoining figure shows the graph of y = ax2 + bx + c, then
у
(x,0) (x2,0)
(1) a > 0
(2) b2 < 4ac
(4*) a and b are of opposite signs
(3) C > 0
Ar​

Answer 1

Answer:

Since parabola is upward a>0

Curve is crossing x-axis at two points ⇒ roots are real ⇒b2−4ac>0

Roots are of opposite signs c/a<0⇒c<0

Also magnitude of +ve root is larger ⇒ sum of roots >0

⇒−b/a>0⇒b<0

Hence all the options are  correct.

Step-by-step explanation:

Answer 2

Answer:

Since parabola is upward a>0

Curve is crossing x-axis at two points ⇒ roots are real ⇒b2−4ac>0

Roots are of opposite signs c/a<0⇒c<0

Also magnitude of +ve root is larger ⇒ sum of roots >0

⇒−b/a>0⇒b<0

Hence all the options are  correct.