Plot Cubic Curves

In this video, Lucy explains how to plot cubic graphs, highlighting their importance in various fields such as digital cryptography and aerodynamics. The video covers the identification of cubic functions by their x cubed term and demonstrates plotting a cubic graph using a table of values. Lucy provides a detailed example, showing how to calculate y-coordinates for both positive and negative x values to complete the graph. The video concludes with tips on drawing smooth curves and labeling the graph, and suggests a calculator trick for quickly finding table values.

Which of the following is NOT an application of cubic functions mentioned in the video?

• Aerodynamics

• Computer animations

• Medical imaging

• Digital cryptography

What is the first step in plotting the cubic function y = x^3 - 5x?

• Labeling the graph

• Using a calculator trick

• Starting with a table of values

• Plotting the graph using a ruler

How many sets of coordinates are needed at minimum to plot a cubic graph accurately?

• Six

• Three

• Five

• Four

What should you do if a plotted point is off the graph grid?

• Use it to understand the graph's shape

• Ignore it completely

• Recalculate the point

• Change the scale of the graph

What is the final step in plotting a cubic graph as mentioned in the video?

• Rechecking the table of values

• Using a ruler to draw the curve

• Labeling the curve with the equation

• Erasing and redrawing the graph