Learning Resources

Investigation1: The Pressure and Volume Relationship for a Gas & Focus A: Functions of the Form

Question #3

Two things you should know about the line y = 0:

• Since the line is horizontal, its slope is zero. Thus, the equation is always in the form y = b, where b represents the y-intercept.
• You can interpret the equation y = 0 as " no matter what the value of x, y will always be equal to zero."

Two things you should know about the line x = 0:

• Since the line it vertical, its slope is undefined. Thus, it is impossible to write its equation in slope-intercept form. Vertical lines take the form x = a, where a is a constant.
• You can interpret the equation x = 0 as " no matter what the value of y, x will always be equal to zero."