In this problem
we are to draw a dot on a real number line
that represents the numbers negative four
and negative 17 and
we're given a number line
with labels every five units.
Since this goes from zero to negative five
and has tick marks every one unit.
This would be negative one.
Negative two, negative
three, negative four.
So to place the number negative four
on the number line, we
are to draw a dot here
by selecting this area,
if ever you put a dot
in a place that you did not intend,
press the clear all button and start over.
We plotted negative
four, which was correct.
Now to plot the number negative 17,
you could continue counting negative one,
negative two, negative three,
negative four, et cetera,
until you get to negative
17 or if you knew
that negative 17 is farther to the left
than negative 15 because negative 17
by definition, is 17 units from zero
whereas negative 15 is
only 15 units from zero.
So negative 17 would be
just like negative 15,
except for instead of
being 15 units from zero,
it would be 16, 17 units from zero.
So this location is 17 units from zero
but it's to the left of
zero, so it is negative 17.
If you kept counting just to check,
this would be negative 18, negative 19,
negative 20, for example.
