Step-by-step explanation:
Using Pythagoras theorem:
Answer:
Well, first you'd want to isolate your Ys, so that
-3y≤12-2x
&
y≥1-2x
Now they look like your common (y=mx+b) equations, so you should be able to graph from there. I don't quite remember how the shadowing works for inequalities, SO, go to desmos.com, type in the equations, and voila!
False because 5 is associated with two values.
To be a function, the domain can only map to one range value, but in this case, 5 is mapped to two values, 1 and 3.