Question

what is the shape of graph of y=ax^+bx+c,where a is not equal to zero

Answer 1

Answer:

Since parabola is upward a>0

Curve is crossing x-axis at two points ⇒ roots are real ⇒b

2

−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.