Question

Represent the zeroes of the quadratic polynomial for an equation $y=x^2+x-9$ in graph.

Answer 1

Factor of $x^2+x-9=(x-3)(x+3)$
Plotting $(-3,0)(-1,-8)(0,-9)(1,-8)(3,0)$ and joining them.
Here, the graph cuts $x$-axis at two distinct points $A$ and $A^{\prime }$.
The x-coordinates of $A(-3,0)$ and $A(3,0)$ are the two zeroes of the quadratic polynomial $x^2+x-9$.