Year 9 Interactive Maths - Second Edition

Projects

Project 6.1  Negative Indices

[-4.7, 4.7] by [-3.1, 3.1]
Xscl = 1, Yscl =1

[-4.7, 4.7] by [-3.1, 3.1]
Xscl = 1, Yscl =1

1.  To complete the following table proceed as suggested.
a.  Press TRACE and use the arrow keys to complete the second column of the table.

b.  Complete column 2 by converting all decimals to fractions.
c.  Complete column 3 by rewriting each fraction so that the denominator is a power of 2.

2.  Describe the relationship that exists between the first column and the last column.
3.  State a rule to describe this relationship.
4.  What happens to y as x becomes larger?
5.  What happens to y as x becomes smaller?
6.  When will y approach zero?