Graphing Quadratic Functions Quiz

What shape does the graph of a quadratic function typically form?

• Line

• U-shape

• Square

• Circle

What is the formula to find the x-coordinate of the vertex in a quadratic function?

• x = -2a/b

• x = 2a/b

• x = -b/2a

• x = b/2a

In the equation y = 2x^2 - 8x + 6, what is the value of 'a'?

• 2

• -8

• 6

• 0

How do you find the y-coordinate of the vertex once you have the x-coordinate?

• Multiply the x-coordinate by a

• Divide the x-coordinate by 2

• Use the formula y = -b/2a

• Substitute x into the original equation

What is the y-coordinate of the vertex for the function y = 2x^2 - 8x + 6 when x = 2?

• 6

• 2

• 0

• -2

What is the purpose of the axis of symmetry in graphing a parabola?

• To calculate the y-intercept

• To determine the slope

• To divide the parabola into two equal halves

• To find the maximum point

Which values are typically chosen to create a table of values for plotting a parabola?

• Values far from the vertex

• Values close to the axis of symmetry

• Random values

• Only positive values

How is symmetry used to plot additional points on a parabola?

• By reflecting points across the axis of symmetry

• By reflecting points across the y-axis

• By reflecting points across the origin

• By reflecting points across the x-axis

What is the final step in graphing a quadratic function?

• Calculating the vertex

• Drawing the axis of symmetry

• Plotting the points and drawing the curve

• Finding the y-intercept

What is the significance of the vertex in a parabola?

• It is the starting point of the parabola

• It is where the parabola intersects the y-axis

• It is the highest or lowest point

• It is the midpoint of the parabola