Summary of Part One and
Part Two

• Define the terms constant and variable .
• Identify whether an item is a constant or a variable.
• Identify whether an item is a dependent or independent variable.
• Identify the x and y axes.
• Identify the origin on a graph.
• Identify x and y coordinates of a point.
• Plot points in a graph.
• Draw a graph from a given equation.
• Determine whether a given point lies on the graph of a given equation.
• Define slope.
• Calculate the slope of a straight line from its graph.
• Identify if a slope is positive, negative, zero, or infinite.
• Identify the slope and y-intercept from the equation of a line.
• Identify the y-intercept from the graph of a line.
• Match a graph with its equation.

If you still have questions concerning any of these topics, go back and review them now.

If not, then complete the review test that follows. Try to do the test without referring back to the material, but after you have finished the review test and checked your answers, you are strongly encouraged to reread the units for the test questions you have missed.

Once you have completed the review test and you are confident that you understand the materials in this book, go on to the next book, Introduction to Graphs II: Linear and Nonlinear Relationships.