Answer:
m = -4
Explanation:
Pre-Solving
We are given a table of coordinate points, all of which are on a line.
We want to find the slope (m) of this line.
To do that, we can use the formula
, where
and
are points.
We can pick any 2 points on the line to use, however let's go with (-5, 15) and (-3, 7).
Let's label the values of these points.
Solving
Let's plug these values into the formula.
We can simplify the denominator:
m = -4