How to graph a quadratic in vertex form

This video tutorial explains how to graph a quadratic function in vertex form. It covers identifying transformations, plotting the vertex, and handling different values of 'a'. The tutorial also provides tips on plotting points and understanding the shape of the parabola, including how to reflect points across the axis of symmetry. The video concludes with a summary of key points for graphing quadratics in vertex form.

What does the parameter 'a' indicate in the vertex form of a quadratic equation?

• Whether the graph opens up or down

• The vertical translation of the graph

• The position of the vertex

• The horizontal translation of the graph

How do you determine the vertex from the vertex form of a quadratic equation?

• By finding the y-intercept

• By calculating the axis of symmetry

• By using the values of h and k

• By looking at the coefficient of x

When plotting points for a quadratic in vertex form, what should you do if 'a' is not 1 or -1?

• Use the same points as when 'a' is 1

• Only plot the vertex

• Use symmetry to reflect points across the axis

• Ignore the value of 'a'

What is the effect of a negative 'a' value on the graph of a quadratic function?

• The graph becomes a straight line

• The graph opens upwards

• The graph opens downwards

• The graph shifts to the right

How can you use the table of values to assist in graphing a quadratic function?

• To find the x-intercepts

• To calculate the maximum value

• To determine the slope of the graph

• To plot additional points around the vertex