I am going to graph the situation on an external graphing utility and show you the answer, it will take a
minute, stay with me.


So the equation of the line is.

Answer:
31 is a positive number, while -169, -369, and -569 is negative.
Step-by-step explanation:
Negative numbers, are numbers less then 0 and include a negative sign that looks like this "-".
Positive numbers are numbers above 0 and don't include a negative sign.
-169, -369, and -569 is negative because they have a negative symbol and the number is below 0, while 31 is positive because it's above 0 and doesn't include a negative sign.
X intercept is (9,0)
Y intercept is (0,9)
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