Quadratic Graphs Quiz

What is the equation of the quadratic graph discussed in the video?

• y = x^2 + 2x + 3

• y = x^2 + 3x - 2

• y = x^2 - 2x - 3

• y = x^2 - 3x + 2

What is the purpose of using a table when plotting a quadratic graph?

• To organize x values only

• To determine the range of the graph

• To calculate the slope of the graph

• To find corresponding y values for given x values

When x = -2, what is the calculated y value for the equation y = x^2 - 2x - 3?

• y = 6

• y = 5

• y = 4

• y = 3

Why is it important to connect plotted points with a smooth curve?

• To save time during exams

• To make it easier to read the graph

• To ensure the graph accurately represents the quadratic function

• To make the graph look more artistic

What should you do if your plotted graph has an unexpected bump?

• Draw a straight line through the bump

• Recalculate the points to check for errors

• Ignore it and continue

• Add more points to smooth it out

In the example exam question, what is the first step to solve part a?

• Check the accuracy of the graph

• Complete the table using the equation

• Draw the graph

• Estimate the minimum value of y

What is the estimated minimum value of y in the example exam question?

• y = -2

• y = -1.5

• y = -1.25

• y = -1

What is the y value when x = 2 in the example exam question?

• y = 1

• y = 2

• y = -1

• y = 0

What is the significance of the lowest point on a quadratic graph?

• It is the point where the graph changes direction

• It is the minimum value of y

• It is where the graph intersects the x-axis

• It represents the maximum value of y

What should you do after plotting all points on the graph?

• Check the x values again

• Estimate the maximum value of y

• Draw a smooth curve through the points

• Erase the table