Drawing Quadratic Graphs

This video tutorial explains how to plot quadratic functions on a graph. It covers the basic shapes of quadratic functions, U-shaped and N-shaped, determined by the sign of the X squared term. The tutorial provides a step-by-step guide on plotting these functions using a table of values, including an example of substituting values to find Y coordinates. Tips for accurate graph plotting and labeling are shared, along with advice on choosing appropriate X coordinates. A calculator trick is also introduced to simplify completing the table of values.

What is the defining feature of a quadratic function?

• It has a constant term only.

• It is always a straight line.

• It is always a cubic function.

• It has an x-squared term as the highest power.

How can you determine the shape of a quadratic graph?

• By the number of terms in the equation.

• By the sign of the x-squared term.

• By the coefficient of the x term.

• By the constant term.

What is the first step in plotting a quadratic function?

• Drawing the axes.

• Creating a table of values.

• Labeling the graph.

• Choosing random points.

Why is it important to use a pencil when plotting the graph?

• To make the graph colorful.

• To easily erase mistakes.

• To make the graph permanent.

• To highlight the curve.

How many coordinates are generally needed to plot a quadratic graph accurately?

• At least three.

• At least ten.

• At least five.

• At least seven.