The following figure shows the graph of f(x)=a x2-b x+c. Then which one of the following is correct?

Question

The following figure shows the graph of f(x)=a x2-b x+c. Then which one of the following is correct? (A) (b/c)>0 (B) a and c are of opposite sign (C) a and b are of same sign (D) None

Tardigrade Admin · Accepted Answer

From above figure, clearly a > 0, c > 0 and b < 0.Now verify alternatives

Q. The following figure shows the graph of $f (x) = a x^{2} - b x + c$ . Then which one of the following is correct?

$\frac{b}{c} > 0$

a and c are of opposite sign

a and b are of same sign

None

From above figure, clearly $a > 0, c > 0$ and $b < 0.$ Now verify alternatives

Q. The following figure shows the graph of f(x)=ax2−bx+c. Then which one of the following is correct?

cb​>0