9000007105

Consider a family $M$ of quadratic functions, as shown in the picture. Any quadratic function in this family is given by the analytic expression $$y=a{x}^2+bx+c$$ where $a$, $b$ and $c$ are real constants and $a\ne 0$. For each function the set $K$ denotes the set of $x$-intercepts. Complete the statement. „The analytic expressions for functions in the family $M$ share only ....”