If the graph of quadratic polynomial a x2-b x-c cuts negative direction of y -axis- then what is the sign of c -

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Byju's Answer

Standard X

Mathematics

Graphical Representation of a Quadratic Equation

If the graph ...

Question

If the graph of quadratic polynomial ax² + bx + c cuts negative direction of y-axis, then what is the sign of c?

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Solution

Since graph of quadratic polynomial cuts negative direction of y−axis

So put x=0 to find the intersection point on y-axis

So the point is

Now it is given that the quadratic polynomial cuts negative direction of y

So

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If the graph of quadratic polynomial ax2 + bx + c cuts negative direction of y-axis, then what is the sign of c?

Since graph of quadratic polynomial cuts negative direction of y−axis So put x=0 to find the intersection point on y-axis So the point is Now it is given that the quadratic polynomial cuts negative direction of y So

If the graph of quadratic polynomial ax² + bx + c cuts negative direction of y-axis, then what is the sign of c?

Since graph of quadratic polynomial cuts negative direction of y−axis

So put x=0 to find the intersection point on y-axis

So the point is

Now it is given that the quadratic polynomial cuts negative direction of y

So