<image>The graph of the quadratic function \( y = ax^{2} + bx + c \) (\( a \neq 0 \), \( a \), \( b \), \( c \) are constants). If the quadratic equation \( ax^{2} + bx + c = m \) in \( x \) has real roots, then the range of values for \( m \) is ____.