Question

If the diagram given below shows the graph of thepolynomial $f\left(x\right)=a{x}^2+bx+c$, then

• A. a<0,b <0 and c >0
• B. a <0,b <0 and c <0
• C. a<0,b >0 and c >0
• D. a <0,b >0 and c <0

Answer 1

Answer: (A)

a<0,b <0 and c >0

Answer is option (A)

a < 0 or a negative number ( parabola open down wards)

c > 0 ( positive intercept on y-axis)
b < 0 ($\frac{-b}{2a}$is in II quadrant and it should be negative)