2. Slope is tells the
steepness of a line.

3. Slope is the ratio
of the vertical
distance between
two points on a
Rise = 6 line to the
horizontal
distance between
Run = 6 the same two
points.
Slope = rise
run
The slope of this line is 6,
6
which reduces to 1.

4. Positive No Slope
Undefined Negative

5. The slope of a line is
positive when, moving
from left to right across
the graph, the line
increases.
This is positive slope
because both the rise
and the run are positive
numbers.

6. A line has a slope of
zero, or no slope,
when it is perfectly
horizontal.
This is because the
rise of the line is 0.

7. The slope of a line is
undefined when it is
perfectly vertical.
It is undefined because
the run of the line is
0, and any number
divided by 0 is
undefined.

8. The slope of a line is
negative when, when
moving from left to
right on the graph, the
line decreases.
This is negative
because either the rise
or the run is negative.