Question

If graph of quadratic polynomial $a x^{2}+ bx+c$ cuts positive direction of y-axis,then what is the sign of c?

Answer 1

Answer:

Step-by-step explanation:

SOLUTION :

Given : Graph of quadratic polynomial  f(x) = ax² + bx + c cuts positive direction of y -axis.  

Then on putting  x = 0 , to find the point of  intersection on y -axis.

y = ax² + bx + c

y = a(0) + b(0) + c

y = 0 + 0 + c

y = c  

Since the point of intersection (0,c) is above the x-axis because f(x) cuts positive direction of y -axis.

Hence,  the sign of c is positive .i.e c > 0.

HOPE THIS ANSWER WILL HELP YOU..

Answer 2

Answer:

SOLUTION :

Given : Graph of quadratic polynomial  f(x) = ax² + bx + c cuts positive direction of y -axis.  

Then on putting  x = 0 , to find the point of  intersection on y -axis.

y = ax² + bx + c

y = a(0) + b(0) + c

y = 0 + 0 + c

y = c  

Since the point of intersection (0,c) is above the x-axis because f(x) cuts positive direction of y -axis.

Hence,  the sign of c is positive .i.e c > 0.

HOPE THIS ANSWER WILL ...

$thnc$