It is like the letter U.
right
Open to the right. Like the sign for a proper subset, or a rounded version of the less than symbol, <.
In that case it opens upwards.
A quadratic function can only have either a maximum or a minimum point, not both. The shape of the graph, which is a parabola, determines this: if the parabola opens upwards (the coefficient of the (x^2) term is positive), it has a minimum point; if it opens downwards (the coefficient is negative), it has a maximum point. Therefore, a quadratic function cannot exhibit both extreme values simultaneously.
Opens downward.
right
left
No, a parabola is the whole curve, not just a part of it.
Open to the right. Like the sign for a subset, or a rounded version of the less than symbol, <.
LEFT
Open to the right. Like the sign for a proper subset, or a rounded version of the less than symbol, <.
right
In that case it opens upwards.
The vertex of this parabola is at -2 -3 When the y-value is -2 the x-value is -5. The coefficient of the squared term in the parabola's equation is -3.
-5
The vertex of this parabola is at -3 -1 When the y-value is 0 the x-value is 4. The coefficient of the squared term in the parabolas equation is 7
A quadratic function can only have either a maximum or a minimum point, not both. The shape of the graph, which is a parabola, determines this: if the parabola opens upwards (the coefficient of the (x^2) term is positive), it has a minimum point; if it opens downwards (the coefficient is negative), it has a maximum point. Therefore, a quadratic function cannot exhibit both extreme values simultaneously.